Turn off coverage

Signed-off-by: Li Wei <liwei@hpe.com>

Author: liw

.github/workflows/c-cpp.yml

@@ -14,4 +14,4 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: make tests
-      run: make tests
+      run: make tests GCOV_CCFLAGS=