ci: drop codecov token

It's not needed to see generate results for pull requests.

Signed-off-by: Paul Spooren <mail@aparcar.org>

.github/workflows/qc.yaml

@@ -202,6 +202,5 @@ jobs:
       - name: Upload coverage reports to Codecov
         uses: codecov/codecov-action@v4
         with:
-          token: ${{ secrets.CODECOV_TOKEN }}
           files: ./coverage.lcov
           verbose: true