Delete stale issues workflow

.github/workflows/stale-issues.yml

@@ -1,31 +0,0 @@
-# This workflow warns and then closes issues and PRs that have had no activity for a specified amount of time.
-#
-# You can adjust the behavior by modifying this file.
-# For more information, see:
-# https://github.com/actions/stale
-name: Mark stale issues and pull requests
-
-on:
-  schedule:
-  - cron: '45 14 * * *'
-
-jobs:
-  stale:
-
-    runs-on: ubuntu-latest
-    permissions:
-      issues: write
-      pull-requests: write
-
-    steps:
-    - uses: actions/stale@v3
-      with:
-        repo-token: ${{ secrets.GITHUB_TOKEN }}
-        days-before-stale: -1
-        days-before-issue-stale: 30
-        days-before-close: -1
-        days-before-issue-close: 45
-        stale-issue-message: 'The issue is tagged as "stale issue" due to no activity in 30 days. If there is no activity for 15 more days, the issue will be closed.'
-        stale-issue-label: 'stale issue'
-        close-issue-message: 'Closing this issue due to no activity in last 45 days'
-