Add publish environment and remove unnecessary workflow (#791)

Author: PaulAsjes

.github/workflows/ci.yml

@@ -44,6 +44,7 @@ jobs:
     needs: [compile, test]
     if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
     runs-on: ubuntu-24.04
+    environment: pypi-publish
     permissions:
       id-token: write
       contents: read