remove redundant apiCheck target since that's included in build

Author: ianbotsf

.github/workflows/continuous-integration.yml

@@ -190,7 +190,6 @@ jobs:
         run: |
           # FIXME K2. Re-enable warnings as errors after this warning is removed: https://youtrack.jetbrains.com/issue/KT-68532
           # echo "kotlinWarningsAsErrors=true" >> $GITHUB_WORKSPACE/local.properties
-          ./gradlew apiCheck
           ./gradlew build
       - name: Save Test Reports
         if: failure()