Delete: Cleanup workflow no longer needed

.github/workflows/cleanup-tests.yml

@@ -1,28 +0,0 @@
-name: Cleanup Stale Tests
-
-on:
-  workflow_dispatch:
-
-jobs:
-  cleanup:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: write
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Set up Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: '20'
-
-      - name: Run cleanup script
-        run: node scripts/cleanup-results.js
-
-      - name: Commit and push if changed
-        run: |
-          git config --global user.name 'github-actions[bot]'
-          git config --global user.email 'github-actions[bot]@users.noreply.github.com'
-          git add results.json
-          git diff --staged --quiet || (git commit -m "Chore: Remove stale test results" && git push)