Remove unused workflow

.github/workflows/filtered_github_webhooks.yml

@@ -1,26 +0,0 @@
-name: Execute Filtered GitHub Webhook
-
-on:
-  pull_request:
-    types:
-      - opened
-      - closed
-      - reopened
-
-jobs:
-  notify_if_not_dependabot:
-    if: ${{ !contains(github.event.pull_request.user.login, 'dependabot') }}
-    runs-on: ubuntu-latest
-    steps:
-    - name: Discord Webhook Action
-      uses: ./
-      with:
-        webhook-url: ${{ secrets.DISCORD_WEBHOOK_URL }}
-        username: GitHub
-        avatar-url: "https://cdn.discordapp.com/avatars/999680196040982618/df91181b3f1cf0ef1592fbe18e0962d7.webp"
-        embed-author-name: ${{ github.event.pull_request.user.login }}
-        embed-author-url: ${{ github.event.pull_request.user.html_url }}
-        embed-author-icon-url: ${{ github.event.pull_request.user.avatar_url }}
-        embed-title: '[${{ github.event.repository.full_name }}] Pull request ${{ github.event.action }}: #${{ github.event.number }} ${{ github.event.pull_request.title }}'
-        embed-description: ${{ github.event.pull_request.body }}
-        embed-url: ${{ github.event.pull_request.html_url }}