Delegate repo sync

.github/workflows/build_push.yml

@@ -200,21 +200,3 @@ jobs:
           cwd: "./repo"
           # committer_name: github-actions[bot]
           # committer_email: github-actions[bot]@users.noreply.github.com
-
-      - name: Sync repo
-        env:
-          COMMIT_MESSAGE: ${{ needs.prepare.outputs.latestCommitMessage }}
-        run: |
-          cd repo
-          git config user.name "Yūzōnō"
-          git config user.email "yuzono@users.noreply.github.com"
-          git remote set-url origin https://github.com/yuzono/anime-repo.git
-          git fetch origin
-          git reset origin/repo
-          git add -A
-          git commit --amend -m "$COMMIT_MESSAGE" --no-sign --allow-empty || echo "No changes to commit"
-          git push origin HEAD:repo --force
-
-      - name: Purge cached index on jsDelivr
-        run: |
-          curl https://purge.jsdelivr.net/gh/yuzono/anime-repo@repo/index.min.json