YARN-11262. Fix CheckStyle.

Author: slfan1989

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/TestCapacitySchedulerPlanFollower.java

@@ -54,7 +54,6 @@
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.extension.RegisterExtension;
 import org.mockito.ArgumentMatchers;
 import org.mockito.Mockito;
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/TestFairSchedulerPlanFollower.java

@@ -54,7 +54,6 @@
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.extension.RegisterExtension;
 import org.mockito.ArgumentMatchers;
 import org.mockito.Mockito;
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/reservation/planning/TestAlignedPlanner.java

@@ -488,8 +488,8 @@ public void testUpdate(String pRecurrenceExpression) throws PlanningException {
     ReservationAllocation alloc1 = plan.getReservationById(flexReservationID);
 
     // Verify allocation
-    assertTrue(
-       check(alloc1, 10 * step, 14 * step, 50, 1024, 1), alloc1.toString());
+    assertTrue(check(alloc1, 10 * step, 14 * step,
+        50, 1024, 1), alloc1.toString());
 
   }