chore: Remove conditional check for test reports in CI workflow for api-gateway

### Summary of Changes
- Eliminated the conditional check for the existence of test reports in the CI workflow for `api-gateway.yml`, further streamlining the process.
- This change continues to enhance the efficiency of the CI pipeline by focusing on essential steps without unnecessary pre-checks.

### Expected Results
- Improved CI workflow efficiency, allowing for faster feedback on code changes and reducing complexity in the build process.

.gitea/workflows/api-gateway.yml

@@ -103,7 +103,6 @@ jobs:
         fi
       
     - name: Send test results to SonarQube
-      if: env.TEST_REPORTS_EXIST == 'true'
       run: |
         echo "Sending test results to SonarQube..."
         ./mvnw clean verify sonar:sonar \
@@ -157,8 +156,4 @@ jobs:
       
     - name: Build Docker image (test only)
       run: docker build -t api-gateway:test .
-
-  security:
-    runs-on: [self-hosted]
-    needs: build