Ignore unused exclude pattern in lcov

Author: flashcode

.github/workflows/ci.yml

@@ -74,7 +74,7 @@ jobs:
         run: |
           cd build-tmp
           lcov --directory . --capture --output-file coverage.info
-          lcov --remove coverage.info '/usr/*' --output-file coverage.info
+          lcov --ignore-errors unused --remove coverage.info '/usr/*' --output-file coverage.info
           lcov --list coverage.info
           bash <(curl -s https://codecov.io/bash) -f coverage.info || echo 'Codecov error'