ci: remove useless coverage option

Author: mthh

.github/workflows/ci-tests.yml

@@ -55,7 +55,7 @@ jobs:
       run: |
         pip install -e .
         coverage run --source=routingpy --module pytest
-        coverage lcov --include "routingpy/*" --output-file=coverage.lcov
+        coverage lcov --include "routingpy/*"
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}