ci: remove conventional commit, as only PR is required

.github/workflows/conventional_commit_pr.yml

@@ -1,17 +0,0 @@
-name: Conventional commit PR
-
-on: [pull_request]
-
-jobs:
-  cog_check_job:
-    runs-on: ubuntu-latest
-    name: check conventional commit compliance
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-          # pick the pr HEAD instead of the merge commit
-          ref: ${{ github.event.pull_request.head.sha }}
-
-      - name: Conventional commit check
-        uses: cocogitto/cocogitto-action@v3