删除无用的工作流配置

.github/workflows/stale.yml

@@ -1,21 +0,0 @@
-name: 'Close stale issues and PRs'
-on:
-  schedule:
-    - cron: '30 1 * * *'
-  workflow_dispatch:
-
-jobs:
-  stale:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/stale@v9
-        with:
-          stale-issue-label: 'stale'
-          stale-pr-label: 'stale'
-          stale-issue-message: 'Issue is now considered stale. If you want to keep it open, please comment :+1:'
-          stale-pr-message: 'PR is now considered stale. If you want to keep it open, please comment :+1:'
-          close-issue-message: 'Issue was closed due to inactivity.'
-          close-pr-message: 'PR was closed due to inactivity.'
-          days-before-stale: 182
-          days-before-close: 365
-          operations-per-run: 50