drop php cs fixer

.github/workflows/php-cs-fixer.yml

@@ -1,23 +0,0 @@
-name: Check & fix styling
-
-on: [push]
-
-jobs:
-  php-cs-fixer:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v2
-        with:
-          ref: ${{ github.head_ref }}
-
-      - name: Run PHP CS Fixer
-        uses: docker://oskarstark/php-cs-fixer-ga
-        with:
-          args: --config=.php_cs.dist.php --allow-risky=yes
-
-      - name: Commit changes
-        uses: stefanzweifel/git-auto-commit-action@v4
-        with:
-          commit_message: Fix styling