Disable code coverage and codecov report (apache#3863)

### Motivation

There're two reasons that we want to disable the code coverage.

1. The current report result is not accurate.
2. We can't get the PR's unit test's code coverage because of the apache Codecov permission.

.github/workflows/bk-ci.yml

@@ -178,13 +178,7 @@ jobs:
           if [[ ! -z "${{ matrix.module }}" ]]; then
             projects_list="-pl ${{ matrix.module }}"
           fi
-          mvn -Pcode-coverage -B -nsu $projects_list verify ${{ matrix.test_args }}
-
-      - name: Upload coverage to Codecov
-        if: ${{ matrix.flag }} != 'shell'
-        uses: codecov/codecov-action@v3
-        with:
-          flags: ${{ matrix.flag }}
+          mvn -B -nsu $projects_list verify ${{ matrix.test_args }}
 
       - name: Aggregates all test reports to ./test-reports and ./surefire-reports directories
         if: ${{ always() }}