Delete sponsors_readme.yml workflow (#4304)

.github/workflows/sponsors_readme.yml

@@ -1,28 +0,0 @@
-name: Generate Sponsors README
-
-on:
-  workflow_dispatch:
-  schedule:
-    - cron: '0 */12 * * *'
-
-jobs:
-  deploy:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout 🛎️
-        uses: actions/checkout@v3
-
-      - name: Generate Sponsors 💖
-        uses: JamesIves/github-sponsors-readme-action@v1
-        with:
-          token: ${{ secrets.README_UPDATER_PAT }}
-          file: 'README.md'
-          minimum: 2500
-          maximum: 99999
-
-      - name: Deploy to GitHub Pages 🚀
-        uses: JamesIves/github-pages-deploy-action@v4
-        with:
-          branch: master
-          folder: '.'
-          token: ${{ secrets.README_UPDATER_PAT }}