Remove the "Verify linked issue" bot (#11338)

.github/workflows/ci_verify_pr_contains_issue.yaml

@@ -1,18 +0,0 @@
-name: Verify Issue Linking
-
-on:
-  pull_request:
-    branches: [master]
-    types: [opened, edited, reopened, ready_for_review]
-  check_run:
-
-jobs:
-  verify_linked_issue:
-    runs-on: ubuntu-latest
-    name: Ensure Pull Request has a linked issue.
-    if: github.event.pull_request.draft == false
-    steps:
-      - name: Verify Linked Issue
-        uses: hattan/verify-linked-issue-action@v1.1.0
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}