HDFS-14876. Remove unused imports from TestBlockMissingException.java and TestClose.java. Contributed by Lisheng Sun.

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestBlockMissingException.java

@@ -19,7 +19,6 @@ package org.apache.hadoop.hdfs;
 
 import static org.junit.Assert.assertTrue;
 
-import java.io.File;
 import java.io.IOException;
 
 import org.slf4j.Logger;
@@ -31,7 +30,6 @@ import org.apache.hadoop.fs.FSDataOutputStream;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hdfs.client.HdfsClientConfigKeys;
-import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
 import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
 import org.junit.Test;
 

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestClose.java

@@ -26,7 +26,6 @@ import java.nio.channels.ClosedChannelException;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
-import org.apache.hadoop.test.GenericTestUtils;
 import org.junit.Test;
 
 public class TestClose {