Remove Codecov for coverage (#954)

.github/workflows/ci.yaml

@@ -89,12 +89,6 @@ jobs:
         # Run only test targets, and not golden_update targets.
         run: bazel coverage //:units --combined_report=lcov
 
-      - name: Upload Code Coverage Report
-        uses: codecov/codecov-action@v2
-        with:
-          name: actions ${{ matrix.java }}
-          files: ./bazel-out/_coverage/_coverage_report.dat
-
   license-header:
     runs-on: ubuntu-latest
     steps:

README.md

@@ -1,4 +1,4 @@
-[![codecov](https://codecov.io/gh/googleapis/gapic-generator-java/branch/main/graph/badge.svg?token=3RUU37GX9U)](https://codecov.io/gh/googleapis/gapic-generator-java)
+[![Coverage](https://sonarcloud.io/api/project_badges/measure?project=googleapis_gapic-generator-java&metric=coverage)](https://sonarcloud.io/summary/new_code?id=googleapis_gapic-generator-java)
 # API Client Generator for Java
 
 Generates a Java client library from protocol buffers.