ci: remove workflow for codeberg since i found a better way

Signed-off-by: 0xMRTT <0xMRTT@proton.me>

.github/workflows/codeberg.yml

@@ -1,19 +0,0 @@
-# Sync repo to the Codeberg mirror
-name: Mirror Sync
-on:
-  push:
-    branches: ["main"]
-  workflow_dispatch: # Manual dispatch
-  schedule:
-    - cron: "0 */6 * * *"
-jobs:
-  codeberg:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-      - uses: pixta-dev/repository-mirroring-action@v1
-        with:
-          target_repo_url: "git@codeberg.org:GradienceTeam/Gradience.git"
-          ssh_private_key: ${{ secrets.CODEBERG_SSH }}