ci: testing on pypi publish; removing unneeded setup.py

Author: CoreJa

.github/workflows/build-on-tag.yml

@@ -74,4 +74,23 @@ jobs:
       - name: Publish Wheel
         uses: softprops/action-gh-release@v2
         with:
-          files: ./dist/*
+          files: ./dist/*
+
+  publish_on_pypi:
+    name: Publish on PyPI
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+    runs-on: ubuntu-latest
+    needs: [ build_sdist, build_wheels ]
+    environment:
+      name: pypi
+      url: https://pypi.org/p/pyquadkey2
+    permissions:
+      id-token: write
+    steps:
+      - name: Retrieve dists
+        uses: actions/download-artifact@v4
+        with:
+          path: dist/
+          merge-multiple: true
+      - name: Publish on PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1