Disable stale action bc it's not useful in current form (#347)

.github/workflows/stale.yml

@@ -1,20 +0,0 @@
-name: 'Close stale issues'
-on:
-  schedule:
-    - cron: '0 0 * * *'
-
-jobs:
-  stale:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/stale@v1
-        with:
-          repo-token: ${{ secrets.GITHUB_TOKEN }}
-          stale-issue-message: 'Issue seems to have gone stale.'
-          stale-pr-message: 'This PR seems to have gone stale.'
-          days-before-stale: 21
-          days-before-close: 3
-          stale-issue-label: 'stale-issue'
-          exempt-issue-label: 'awaiting-approval'
-          stale-pr-label: 'stale-pr'
-          exempt-pr-label: 'awaiting-approval'