HADOOP-15376. Remove double semi colons on imports that make Clover fall over.

Signed-off-by: Akira Ajisaka <aajisaka@apache.org>

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/TestIOUtils.java

@@ -39,7 +39,7 @@ import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 
-import org.apache.commons.io.FileUtils;;
+import org.apache.commons.io.FileUtils;
 import org.apache.hadoop.fs.PathIOException;
 import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.hadoop.test.LambdaTestUtils;