diff --git a/.github/workflows/approve-readme.yaml b/.github/workflows/approve-readme.yaml
deleted file mode 100644
index 7513acaeb..000000000
--- a/.github/workflows/approve-readme.yaml
+++ /dev/null
@@ -1,54 +0,0 @@
-on:
-  pull_request:
-name: auto-merge-readme
-jobs:
-  approve:
-    runs-on: ubuntu-latest
-    if: github.repository_owner == 'googleapis' && github.head_ref == 'autosynth-readme'
-    steps:
-      - uses: actions/github-script@v3
-        with:
-          github-token: ${{secrets.YOSHI_APPROVER_TOKEN}}
-          script: |
-            // only approve PRs from yoshi-automation
-            if (context.payload.pull_request.user.login !== "yoshi-automation") {
-              return;
-            }
-
-            // only approve PRs like "chore: release <release version>"
-            if (!context.payload.pull_request.title === "chore: regenerate README") {
-              return;
-            }
-
-            // only approve PRs with README.md and synth.metadata changes
-            const files = new Set(
-              (
-                await github.paginate(
-                  github.pulls.listFiles.endpoint({
-                    owner: context.repo.owner,
-                    repo: context.repo.repo,
-                    pull_number: context.payload.pull_request.number,
-                  })
-                )
-              ).map(file => file.filename)
-            );
-            if (files.size != 2 || !files.has("README.md") || !files.has(".github/readme/synth.metadata/synth.metadata")) {
-              return;
-            }
-
-            // approve README regeneration PR
-            await github.pulls.createReview({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              body: 'Rubber stamped PR!',
-              pull_number: context.payload.pull_request.number,
-              event: 'APPROVE'
-            });
-
-            // attach automerge label
-            await github.issues.addLabels({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              issue_number: context.payload.pull_request.number,
-              labels: ['automerge']
-            });
diff --git a/.github/workflows/auto-release.yaml b/.github/workflows/auto-release.yaml
deleted file mode 100644
index 2b6cdbc97..000000000
--- a/.github/workflows/auto-release.yaml
+++ /dev/null
@@ -1,88 +0,0 @@
-on:
-  pull_request:
-name: auto-release
-jobs:
-  approve:
-    runs-on: ubuntu-latest
-    if: contains(github.head_ref, 'release-v')
-    steps:
-    - uses: actions/github-script@v3
-      with:
-        github-token: ${{secrets.YOSHI_APPROVER_TOKEN}}
-        debug: true
-        script: |
-          // only approve PRs from release-please[bot]
-          if (context.payload.pull_request.user.login !== "release-please[bot]") {
-            return;
-          }
-
-          // only approve PRs like "chore: release <release version>"
-          if ( !context.payload.pull_request.title.startsWith("chore: release") ) {
-            return;
-          }
-
-          // only approve PRs with pom.xml and versions.txt changes
-          const filesPromise = github.pulls.listFiles.endpoint({
-            owner: context.repo.owner,
-            repo: context.repo.repo,
-            pull_number: context.payload.pull_request.number,
-          });
-          const changed_files = await github.paginate(filesPromise)
-
-          if ( changed_files.length < 1 ) {
-            console.log( "Not proceeding since PR is empty!" )
-            return;
-          }
-
-          if ( !changed_files.some(v => v.filename.includes("pom")) || !changed_files.some(v => v.filename.includes("versions.txt")) ) {
-            console.log( "PR file changes do not have pom.xml or versions.txt -- something is wrong. PTAL!" )
-            return;
-          }
-
-          // trigger auto-release when
-          // 1) it is a SNAPSHOT release (auto-generated post regular release)
-          // 2) there are dependency updates only
-          // 3) there are no open dependency update PRs in this repo (to avoid multiple releases)
-          if (
-            context.payload.pull_request.body.includes("Fix") ||
-            context.payload.pull_request.body.includes("Build") ||
-            context.payload.pull_request.body.includes("Documentation") ||
-            context.payload.pull_request.body.includes("BREAKING CHANGES") ||
-            context.payload.pull_request.body.includes("Features")
-          ) {
-            console.log( "Not auto-releasing since it is not a dependency-update-only release." );
-            return;
-          }
-
-          const promise = github.pulls.list.endpoint({
-            owner: context.repo.owner,
-            repo: context.repo.repo,
-            state: 'open'
-          });
-          const open_pulls = await github.paginate(promise)
-
-          if ( open_pulls.length > 1 && !context.payload.pull_request.title.includes("SNAPSHOT") ) {
-            for ( const pull of open_pulls ) {
-              if ( pull.title.startsWith("deps: update dependency") ) {
-                console.log( "Not auto-releasing yet since there are dependency update PRs open in this repo." );
-                return;
-              }
-            }
-          }
-
-          // approve release PR
-          await github.pulls.createReview({
-            owner: context.repo.owner,
-            repo: context.repo.repo,
-            body: 'Rubber stamped release!',
-            pull_number: context.payload.pull_request.number,
-            event: 'APPROVE'
-          });
-
-          // attach kokoro:force-run and automerge labels
-          await github.issues.addLabels({
-            owner: context.repo.owner,
-            repo: context.repo.repo,
-            issue_number: context.payload.pull_request.number,
-            labels: ['kokoro:force-run', 'automerge']
-          });
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 683022075..0e496d7bf 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -5,47 +5,6 @@ on:
   pull_request:
 name: ci
 jobs:
-  units:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        java: [7, 8, 11]
-    steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-java@v1
-      with:
-        java-version: ${{matrix.java}}
-    - run: java -version
-    - run: .kokoro/build.sh
-      env:
-        JOB_TYPE: test
-    - name: coverage
-      uses: codecov/codecov-action@v1
-      with:
-        name: actions ${{matrix.java}}
-  windows:
-    runs-on: windows-latest
-    steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-java@v1
-      with:
-        java-version: 8
-    - run: java -version
-    - run: .kokoro/build.bat
-      env:
-        JOB_TYPE: test
-  dependencies:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        java: [8, 11]
-    steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-java@v1
-      with:
-        java-version: ${{matrix.java}}
-    - run: java -version
-    - run: .kokoro/dependencies.sh
   linkage-monitor:
     runs-on: ubuntu-latest
     steps:
@@ -53,27 +12,12 @@ jobs:
     - uses: actions/setup-java@v1
       with:
         java-version: 8
-    - run: java -version
-    - run: .kokoro/linkage-monitor.sh
-  lint:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-java@v1
-      with:
-        java-version: 8
-    - run: java -version
-    - run: .kokoro/build.sh
-      env:
-        JOB_TYPE: lint
-  clirr:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-java@v1
-      with:
-        java-version: 8
-    - run: java -version
-    - run: .kokoro/build.sh
-      env:
-        JOB_TYPE: clirr
\ No newline at end of file
+    - run: >
+        mvn install -B -V \
+           -Duser.home=/home/runner/work/_temp/_github_home \
+           -DskipTests=true \
+           -Dclirr.skip=true \
+           -Denforcer.skip=true \
+           -Dmaven.javadoc.skip=true \
+           -Dgcloud.download.skip=true
+    - uses: suztomo/cloud-opensource-java@v1
diff --git a/.github/workflows/formatting.yaml b/.github/workflows/formatting.yaml
deleted file mode 100644
index 6844407b4..000000000
--- a/.github/workflows/formatting.yaml
+++ /dev/null
@@ -1,25 +0,0 @@
-on:
-  pull_request_target:
-    types: [opened, synchronize]
-    branches:
-      - master
-name: format
-jobs:
-  format-code:
-    runs-on: ubuntu-latest
-    env:
-      ACCESS_TOKEN: ${{ secrets.YOSHI_CODE_BOT_TOKEN }}
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          ref: ${{github.event.pull_request.head.ref}}
-          repository: ${{github.event.pull_request.head.repo.full_name}}
-      - uses: actions/setup-java@v1
-        with:
-          java-version: 11
-      - run: "mvn com.coveo:fmt-maven-plugin:format"
-      - uses: googleapis/code-suggester@v1
-        with:
-          command: review
-          pull_number: ${{ github.event.pull_request.number }}
-          git_dir: '.'
diff --git a/.github/workflows/samples.yaml b/.github/workflows/samples.yaml
deleted file mode 100644
index c46230a78..000000000
--- a/.github/workflows/samples.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
-on:
-  pull_request:
-name: samples
-jobs:
-  checkstyle:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-java@v1
-        with:
-          java-version: 8
-      - name: Run checkstyle
-        run: mvn -P lint --quiet --batch-mode checkstyle:check
-        working-directory: samples/snippets