Revert "HDFS-12185. Ozone: Fix Leaking in TestXceiverClientManager. Contributed by Xiaoyu Yao"

This reverts commit f801454ad320e0d9c544c4249456bcaf50b4f30b.

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/ozone/scm/TestXceiverClientManager.java

@@ -19,7 +19,6 @@ package org.apache.hadoop.ozone.scm;
 
 import com.google.common.cache.Cache;
 import org.apache.commons.lang.RandomStringUtils;
-import org.apache.hadoop.io.IOUtils;
 import org.apache.hadoop.ozone.MiniOzoneCluster;
 import org.apache.hadoop.ozone.OzoneConfiguration;
 import org.apache.hadoop.ozone.OzoneConsts;
@@ -30,7 +29,6 @@ import org.apache.hadoop.scm.protocolPB
     .StorageContainerLocationProtocolClientSideTranslatorPB;
 import org.apache.hadoop.scm.storage.ContainerProtocolCalls;
 import org.junit.Assert;
-import org.junit.AfterClass;
 import org.junit.BeforeClass;
 import org.junit.Rule;
 import org.junit.Test;
@@ -63,11 +61,6 @@ public class TestXceiverClientManager {
         .createStorageContainerLocationClient();
   }
 
-  @AfterClass
-  public static void shutdown() {
-    IOUtils.cleanup(null, cluster, storageContainerLocationClient);
-  }
-
   @Test
   public void testCaching() throws IOException {
     OzoneConfiguration conf = new OzoneConfiguration();