YARN-11509. Fix CheckStyle.

Author: slfan1989

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/amrmproxy/TestFederationInterceptor.java

@@ -1441,7 +1441,8 @@ public void testLaunchUAMAndRegisterApplicationMasterRetry() throws Exception {
 
     ugi.doAs((PrivilegedExceptionAction<Object>) () -> {
       // Register the application
-      RegisterApplicationMasterRequest registerReq = Records.newRecord(RegisterApplicationMasterRequest.class);
+      RegisterApplicationMasterRequest registerReq =
+          Records.newRecord(RegisterApplicationMasterRequest.class);
       registerReq.setHost(Integer.toString(testAppId));
       registerReq.setRpcPort(0);
       registerReq.setTrackingUrl("");

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/amrmproxy/TestableFederationInterceptor.java

@@ -20,17 +20,13 @@
 
 import java.io.IOException;
 import java.security.PrivilegedExceptionAction;
-import java.util.List;
-import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.token.Token;
-import org.apache.hadoop.yarn.api.protocolrecords.AllocateRequest;
-import org.apache.hadoop.yarn.api.protocolrecords.AllocateResponse;
 import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
 import org.apache.hadoop.yarn.api.records.ApplicationId;
 import org.apache.hadoop.yarn.api.records.ApplicationSubmissionContext;
@@ -40,7 +36,6 @@
 import org.apache.hadoop.yarn.server.AMHeartbeatRequestHandler;
 import org.apache.hadoop.yarn.server.AMRMClientRelayer;
 import org.apache.hadoop.yarn.server.MockResourceManagerFacade;
-import org.apache.hadoop.yarn.server.federation.store.records.SubClusterId;
 import org.apache.hadoop.yarn.server.uam.UnmanagedAMPoolManager;
 import org.apache.hadoop.yarn.server.uam.UnmanagedApplicationManager;
 import org.slf4j.Logger;