Remove codecov environment variable (#812)

Author: Kludex

.github/workflows/main.yml

@@ -127,7 +127,6 @@ jobs:
       - run: uv run coverage xml
       - uses: codecov/codecov-action@v4
         with:
-          token: ${{ secrets.CODECOV_TOKEN }}
           file: ./coverage.xml
           env_vars: PYTHON
       - run: uv run coverage report --fail-under 100