Remove Auto Approve worfklow (#428)

This workflow has not been used in a long time due to policy changes
toward automated approval. Remove it from the repo for now to reduce
maintenance burden. It can be pulled from git history if needed in the
future.

Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>

Author: makubacki

.github/workflows/AutoApprover.yml

@@ -392,30 +392,6 @@ group:
       microsoft/mu_tiano_platforms
       microsoft/mu_tiano_plus
 
-# Leaf Workflow - Auto Approver
-  - files:
-    - source: .sync/workflows/leaf/auto-approve.yml
-      dest: .github/workflows/auto-approve.yml
-      template: true
-    repos: |
-      microsoft/mu
-      microsoft/mu_basecore
-      microsoft/mu_common_intel_min_platform
-      microsoft/mu_crypto_release
-      microsoft/mu_devops
-      microsoft/mu_feature_config
-      microsoft/mu_feature_debugger
-      microsoft/mu_feature_dfci
-      microsoft/mu_feature_ipmi
-      microsoft/mu_feature_mm_supv
-      microsoft/mu_feature_uefi_variable
-      microsoft/mu_oem_sample
-      microsoft/mu_plus
-      microsoft/mu_silicon_arm_tiano
-      microsoft/mu_silicon_intel_tiano
-      microsoft/mu_tiano_platforms
-      microsoft/mu_tiano_plus
-
 # Leaf Workflow - Backport Dev Branch Changes to Release Branch
   - files:
     - source: .sync/workflows/leaf/backport-to-release-branch.yml

.github/workflows/auto-approve.yml

@@ -56,8 +56,6 @@ Table of Contents
 
    - `Auto Merge`_
 
-   - `Auto Approver`_
-
    - `File Synchronization`_
 
    - `Initial Issue Triage`_
@@ -196,28 +194,6 @@ To see more about this flow look in these files:
 A Project Mu repo simply needs to sync `.sync/workflows/leaf/auto-merge.yml` to their repo in `Files.yml` and the
 auto merge workflow will run in the repo.
 
-Auto Approver
--------------
-
-Auto approves pull requests from allowed bot accounts. As part of reducing dependency overhead, this workflow first
-approves pull requests that are then auto merged after CI status checks complete. If a CI status check (e.g. build)
-fails, the pull request will not be merged.
-
-Note: This is currently disabled in most Project Mu repos.
-
-To see more about this flow look in these files:
-
-- The main reusable workflow file:
-
-  - `.github/workflows/AutoApprover.yml`
-
-- The leaf workflow
-
-  - `.sync/workflows/leaf/auto-approve.yml`
-
-A Project Mu repo simply needs to sync `.sync/workflows/leaf/auto-approve.yml` to their repo in `Files.yml` and the
-auto approve workflow will run in the repo.
-
 File Synchronization
 --------------------