remove redundant golden tests check

Author: mpeddada1

.github/workflows/ci.yaml

@@ -232,13 +232,6 @@ jobs:
           java-version: 8
           distribution: temurin
       - run: java -version
-      - name: Showcase golden tests
-        working-directory: java-showcase
-        run: |
-            mvn test \
-            -P enable-golden-tests \
-            --batch-mode \
-            --no-transfer-progress
       - name: Parse showcase version
         working-directory: java-showcase/gapic-showcase
         run: echo "SHOWCASE_VERSION=$(mvn help:evaluate -Dexpression=gapic-showcase.version -q -DforceStdout)" >> "$GITHUB_ENV"