diff --git a/.github/sync-packages.php b/.github/sync-packages.php
deleted file mode 100644
index e5bf79cfe..000000000
--- a/.github/sync-packages.php
+++ /dev/null
@@ -1,71 +0,0 @@
-<?php
-
-if ('cli' !== PHP_SAPI) {
-    echo "This script can only be run from the command line.\n";
-    exit(1);
-}
-
-$mainRepo = 'https://github.com/symfony/polyfill';
-exec('find src/ -name composer.json -not -path "src/Xml/*"', $packages);
-
-foreach ($packages as $package) {
-    $package = dirname($package);
-    $c = file_get_contents($package.'/.gitattributes');
-    $c = preg_replace('{^/\.git.*+\n}m', '', $c);
-    $c .= "/.git* export-ignore\n";
-    file_put_contents($package.'/.gitattributes', $c);
-
-
-    @mkdir($package.'/.github');
-    file_put_contents($package.'/.github/PULL_REQUEST_TEMPLATE.md', <<<EOTXT
-        Please do not submit any Pull Requests here. They will be closed.
-        ---
-
-        Please submit your PR here instead:
-        {$mainRepo}
-
-        This repository is what we call a "subtree split": a read-only subset of that main repository.
-        We're looking forward to your PR there!
-
-        EOTXT
-    );
-
-    @mkdir($package.'/.github/workflows');
-    file_put_contents($package.'/.github/workflows/check-subtree-split.yml', <<<EOTXT
-        name: Check subtree split
-        on:
-          pull_request_target:
-        jobs:
-          close-pull-request:
-            runs-on: ubuntu-latest
-            steps:
-            - name: Close pull request
-              uses: actions/github-script@v6
-              with:
-                script: |
-                  if (context.repo.owner === "symfony") {
-                    github.rest.issues.createComment({
-                      owner: "symfony",
-                      repo: context.repo.repo,
-                      issue_number: context.issue.number,
-                      body: `
-                  Thanks for your Pull Request! We love contributions.
-
-                  However, you should instead open your PR on the main repository:
-                  {$mainRepo}
-
-                  This repository is what we call a "subtree split": a read-only subset of that main repository.
-                  We're looking forward to your PR there!
-                  `
-                    });
-                    github.rest.pulls.update({
-                      owner: "symfony",
-                      repo: context.repo.repo,
-                      pull_number: context.issue.number,
-                      state: "closed"
-                    });
-                  }
-
-        EOTXT
-    );
-}
diff --git a/.github/workflows/package-tests.yml b/.github/workflows/package-tests.yml
deleted file mode 100644
index 716ee67ac..000000000
--- a/.github/workflows/package-tests.yml
+++ /dev/null
@@ -1,23 +0,0 @@
-name: Verify Packages
-
-on:
-  pull_request:
-    paths:
-      - src/**
-
-permissions:
-  contents: read
-
-jobs:
-  verify:
-    name: Verify Packages
-    runs-on: Ubuntu-20.04
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Verify subtree-splits are auto-closed
-        run: |
-          php .github/sync-packages.php
-          git add src/
-          git diff --staged --exit-code || (echo '::error::Please run "php .github/sync-packages.php".' && exit 1)
diff --git a/src/Apcu/.gitattributes b/src/Apcu/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Apcu/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Apcu/.github/PULL_REQUEST_TEMPLATE.md b/src/Apcu/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Apcu/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Apcu/.github/workflows/check-subtree-split.yml b/src/Apcu/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Apcu/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/src/Ctype/.gitattributes b/src/Ctype/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Ctype/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Ctype/.github/PULL_REQUEST_TEMPLATE.md b/src/Ctype/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Ctype/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Ctype/.github/workflows/check-subtree-split.yml b/src/Ctype/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Ctype/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/src/Iconv/.gitattributes b/src/Iconv/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Iconv/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Iconv/.github/PULL_REQUEST_TEMPLATE.md b/src/Iconv/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Iconv/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Iconv/.github/workflows/check-subtree-split.yml b/src/Iconv/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Iconv/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/src/Intl/Grapheme/.gitattributes b/src/Intl/Grapheme/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Intl/Grapheme/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Intl/Grapheme/.github/PULL_REQUEST_TEMPLATE.md b/src/Intl/Grapheme/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Intl/Grapheme/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Intl/Grapheme/.github/workflows/check-subtree-split.yml b/src/Intl/Grapheme/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Intl/Grapheme/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/src/Intl/Icu/.gitattributes b/src/Intl/Icu/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Intl/Icu/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Intl/Icu/.github/PULL_REQUEST_TEMPLATE.md b/src/Intl/Icu/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Intl/Icu/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Intl/Icu/.github/workflows/check-subtree-split.yml b/src/Intl/Icu/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Intl/Icu/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/src/Intl/Idn/.gitattributes b/src/Intl/Idn/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Intl/Idn/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Intl/Idn/.github/PULL_REQUEST_TEMPLATE.md b/src/Intl/Idn/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Intl/Idn/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Intl/Idn/.github/workflows/check-subtree-split.yml b/src/Intl/Idn/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Intl/Idn/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/src/Intl/MessageFormatter/.gitattributes b/src/Intl/MessageFormatter/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Intl/MessageFormatter/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Intl/MessageFormatter/.github/PULL_REQUEST_TEMPLATE.md b/src/Intl/MessageFormatter/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Intl/MessageFormatter/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Intl/MessageFormatter/.github/workflows/check-subtree-split.yml b/src/Intl/MessageFormatter/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Intl/MessageFormatter/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/src/Intl/Normalizer/.gitattributes b/src/Intl/Normalizer/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Intl/Normalizer/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Intl/Normalizer/.github/PULL_REQUEST_TEMPLATE.md b/src/Intl/Normalizer/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Intl/Normalizer/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Intl/Normalizer/.github/workflows/check-subtree-split.yml b/src/Intl/Normalizer/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Intl/Normalizer/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/src/Mbstring/.gitattributes b/src/Mbstring/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Mbstring/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Mbstring/.github/PULL_REQUEST_TEMPLATE.md b/src/Mbstring/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Mbstring/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Mbstring/.github/workflows/check-subtree-split.yml b/src/Mbstring/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Mbstring/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/src/Php72/.gitattributes b/src/Php72/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Php72/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Php72/.github/PULL_REQUEST_TEMPLATE.md b/src/Php72/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Php72/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Php72/.github/workflows/check-subtree-split.yml b/src/Php72/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Php72/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/src/Php73/.gitattributes b/src/Php73/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Php73/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Php73/.github/PULL_REQUEST_TEMPLATE.md b/src/Php73/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Php73/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Php73/.github/workflows/check-subtree-split.yml b/src/Php73/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Php73/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/src/Php74/.gitattributes b/src/Php74/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Php74/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Php74/.github/PULL_REQUEST_TEMPLATE.md b/src/Php74/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Php74/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Php74/.github/workflows/check-subtree-split.yml b/src/Php74/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Php74/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/src/Php80/.gitattributes b/src/Php80/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Php80/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Php80/.github/PULL_REQUEST_TEMPLATE.md b/src/Php80/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Php80/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Php80/.github/workflows/check-subtree-split.yml b/src/Php80/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Php80/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/src/Php81/.gitattributes b/src/Php81/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Php81/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Php81/.github/PULL_REQUEST_TEMPLATE.md b/src/Php81/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Php81/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Php81/.github/workflows/check-subtree-split.yml b/src/Php81/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Php81/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/src/Php82/.gitattributes b/src/Php82/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Php82/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Php82/.github/PULL_REQUEST_TEMPLATE.md b/src/Php82/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Php82/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Php82/.github/workflows/check-subtree-split.yml b/src/Php82/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Php82/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/src/Php83/.gitattributes b/src/Php83/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Php83/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Php83/.github/PULL_REQUEST_TEMPLATE.md b/src/Php83/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Php83/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Php83/.github/workflows/check-subtree-split.yml b/src/Php83/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Php83/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/src/Php84/.gitattributes b/src/Php84/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Php84/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Php84/.github/PULL_REQUEST_TEMPLATE.md b/src/Php84/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Php84/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Php84/.github/workflows/check-subtree-split.yml b/src/Php84/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Php84/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/src/Util/.gitattributes b/src/Util/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Util/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Util/.github/PULL_REQUEST_TEMPLATE.md b/src/Util/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Util/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Util/.github/workflows/check-subtree-split.yml b/src/Util/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Util/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }
diff --git a/src/Uuid/.gitattributes b/src/Uuid/.gitattributes
deleted file mode 100644
index 825312826..000000000
--- a/src/Uuid/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-/.git* export-ignore
diff --git a/src/Uuid/.github/PULL_REQUEST_TEMPLATE.md b/src/Uuid/.github/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 1325301f8..000000000
--- a/src/Uuid/.github/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,8 +0,0 @@
-Please do not submit any Pull Requests here. They will be closed.
----
-
-Please submit your PR here instead:
-https://github.com/symfony/polyfill
-
-This repository is what we call a "subtree split": a read-only subset of that main repository.
-We're looking forward to your PR there!
diff --git a/src/Uuid/.github/workflows/check-subtree-split.yml b/src/Uuid/.github/workflows/check-subtree-split.yml
deleted file mode 100644
index efc143261..000000000
--- a/src/Uuid/.github/workflows/check-subtree-split.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: Check subtree split
-on:
-  pull_request_target:
-jobs:
-  close-pull-request:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Close pull request
-      uses: actions/github-script@v6
-      with:
-        script: |
-          if (context.repo.owner === "symfony") {
-            github.rest.issues.createComment({
-              owner: "symfony",
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: `
-          Thanks for your Pull Request! We love contributions.
-
-          However, you should instead open your PR on the main repository:
-          https://github.com/symfony/polyfill
-
-          This repository is what we call a "subtree split": a read-only subset of that main repository.
-          We're looking forward to your PR there!
-          `
-            });
-            github.rest.pulls.update({
-              owner: "symfony",
-              repo: context.repo.repo,
-              pull_number: context.issue.number,
-              state: "closed"
-            });
-          }