[Improvement-18056] Clean up unused methods and classes in the dolphinscheduler-worker

dolphinscheduler-worker/src/main/java/org/apache/dolphinscheduler/server/worker/utils/TenantUtils.java

@@ -84,10 +84,6 @@ public static String getBootstrapTenant() {
         return TenantConstants.BOOTSTRAP_SYSTEM_USER;
     }
 
-    public static boolean isBootstrapTenant(String tenantCode) {
-        return TenantConstants.BOOTSTRAP_SYSTEM_USER.equals(tenantCode);
-    }
-
     public static boolean tenantExists(String tenantCode) {
         return OSUtils.getUserList().contains(tenantCode);
     }

dolphinscheduler-worker/src/test/java/org/apache/dolphinscheduler/server/worker/registry/WorkerRegistryClientTest.java

@@ -54,16 +54,22 @@ public class WorkerRegistryClientTest {
 
     @InjectMocks
     private WorkerRegistryClient workerRegistryClient;
+
     @Mock
     private RegistryClient registryClient;
+
     @Mock
     private WorkerServerLoadProtection workerServerLoadProtection;
+
     @Mock
     private WorkerConfig workerConfig;
+
     @Mock
     private MetricsProvider metricsProvider;
+
     @Mock
     private PhysicalTaskExecutorContainerProvider physicalTaskExecutorContainerDelegator;
+
     @Mock
     private IStoppable stoppable;