HDDS-1240. Fix check style issues caused by HDDS-1196.

hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/HddsConfigKeys.java

@@ -17,9 +17,6 @@
 package org.apache.hadoop.hdds;
 
 import org.apache.hadoop.utils.db.DBProfile;
-import org.apache.ratis.util.TimeDuration;
-
-import java.util.concurrent.TimeUnit;
 
 /**
  * This class contains constants for configuration keys and default values

hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/block/BlockManagerImpl.java

@@ -45,8 +45,6 @@ import org.apache.hadoop.hdds.scm.pipeline.Pipeline;
 import org.apache.hadoop.hdds.scm.pipeline.PipelineManager;
 import org.apache.hadoop.hdds.scm.pipeline.PipelineNotFoundException;
 import org.apache.hadoop.hdds.scm.server.StorageContainerManager;
-import org.apache.hadoop.hdds.server.events.EventHandler;
-import org.apache.hadoop.hdds.server.events.EventPublisher;
 import org.apache.hadoop.metrics2.util.MBeans;
 import org.apache.hadoop.util.StringUtils;
 import org.slf4j.Logger;

hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/om/TestScmChillMode.java

@@ -57,7 +57,6 @@ import org.junit.Test;
 import org.junit.rules.Timeout;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
-import sun.rmi.runtime.Log;
 
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;