chore: delete welcome workflow (#12279)

.github/workflows/welcome-new-contributors.yml

@@ -1,27 +0,0 @@
-name: "Welcome new contributors"
-
-on:
-  issues:
-    types: opened
-  pull_request:
-    types: opened
-
-permissions:
-  pull-requests: write
-  issues: write
-
-jobs:
-  welcome-message:
-    name: Welcoming New Users
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    if: github.event.action == 'opened'
-    steps:
-      - uses: actions/first-interaction@v1
-        with:
-          repo-token: ${{ secrets.GITHUB_TOKEN }}
-          pr-message: |-
-            Thank you for making your first Pull Request and taking the time to improve Cal.com ! ❤️🎉
-            Feel free to join our [discord](https://go.cal.com/discord) and post your PR link to [collect XP and win prizes!](https://cal.com/blog/community-incentives)            
-          issue-message: |
-            Thank you for opening your first issue, one of our team members will review it as soon as it possible. ❤️🎉