revert: (AppMap) Enable install-action to commit to the branch

.github/workflows/main.yml

@@ -9,32 +9,20 @@ on:
     - cron: '0 0 * * 0'
 
 permissions:
-  # Allows the EndBug/add-and-commit step to commit the package manager changes,
-  # adding the AppMap language library and configuration file appmap.yml.
-  # Once the EndBug/add-and-commit is removed, this permission can be removed, 
-  # unless you need it for other reasons.
   contents: write
-
-  # Allows the getappmap/archive-action to write a PR comment with the 
-  # AppMap configuration status.
   pull-requests: write
 
 jobs:
   test:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-        with:
-          ref: ${{ github.event.pull_request.head.ref }}
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
           bundler-cache: true
 
-      # Begin AppMap CI language agent installation.
-      # This snippet can be safely removed once the AppMap language agent has been
-      # added to the project dependencies, and appmap.yml has been created.
       - name: Enable appmap gem update
         run: bundle config unset deployment
       - name: Install AppMap tools
@@ -46,15 +34,12 @@ jobs:
         uses: EndBug/add-and-commit@v9
         with:
           message: "ci: Add AppMap language agent and appmap.yml"
-      # End AppMap CI language agent installation
 
       - name: Run tests
         run: bundle exec rails test
 
-      # Begin AppMap bootstrap archive step
       - name: Archive AppMaps
         id: appmap-bootstrap-archive-appmaps
         uses: getappmap/archive-action@v1
         with:
-          revision: ${{ github.event.pull_request.base.sha }}
-      # End AppMap bootstrap archive step
+          revision: ${{ github.event.pull_request.base.sha }}