deleted local GitHub Action

.github/workflows/sync-with-gitlab.yml

@@ -1,31 +0,0 @@
-name: Automatic sync with Gitlab's read-only mirror
-
-on: [workflow_dispatch, push]
-
-jobs:
-  mirror:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Set up SSH key for Runner
-        env:
-          SSH_KEY: ${{ secrets.GITLAB_DEPLOY_KEY }}
-        run: |
-          mkdir -p ~/.ssh
-          echo "$SSH_KEY" > ~/.ssh/id_ed25519
-          chmod 600 ~/.ssh/id_ed25519
-          ssh-keyscan -t rsa github.com >> ~/.ssh/known_hosts
-          ssh-keyscan -t rsa gitlab.com >> ~/.ssh/known_hosts
-
-      - name: Clone repository from GitHub as mirror and push to Gitlab
-        env:
-          REPO_ORIGINAL: "https://github.com/rehlds/hitboxtracker.git"
-          REPO_TARGET:   "git@gitlab.com:rehlds/hitboxtracker.git"
-        run: |
-          git clone --mirror "$REPO_ORIGINAL" repo-mirror
-          cd repo-mirror
-          git remote set-url origin "$REPO_TARGET"
-          git push --mirror --force