chore(ci): delete stale action

.github/workflows/stale.yml

@@ -1,27 +0,0 @@
-name: Stale
-
-on:
-  schedule:
-    - cron: "0 19 * * *"
-
-jobs:
-  stale:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/stale@v8.0.0
-        with:
-          repo-token: ${{ secrets.GITHUB_TOKEN }}
-          stale-issue-message: |
-            This issue has been automatically marked as stale because it has not had
-            recent activity. It will be closed if no further activity occurs. Thank you
-            for your contributions.
-          stale-pr-message: |
-            This PR has been automatically marked as stale because it has not had
-            recent activity. It will be closed if no further activity occurs. Thank you
-            for your contributions.
-          days-before-stale: 60
-          days-before-close: 7
-          close-issue-label: wontfix
-          close-pr-label: wontfix
-          exempt-issue-labels: "bug,enhancement"
-          exempt-pr-labels: "bug,enhancement"