fix wrong order

Author: mwkang

hbase-client/src/test/java/org/apache/hadoop/hbase/filter/RegexStringComparatorTest.java

@@ -17,6 +17,8 @@
  */
 package org.apache.hadoop.hbase.filter;
 
+import java.nio.charset.StandardCharsets;
+import java.util.regex.Pattern;
 import org.apache.hadoop.hbase.DoNotRetryUncheckedIOException;
 import org.apache.hadoop.hbase.HBaseClassTestRule;
 import org.apache.hadoop.hbase.testclassification.SmallTests;
@@ -26,9 +28,6 @@
 import org.junit.Test;
 import org.junit.experimental.categories.Category;
 
-import java.nio.charset.StandardCharsets;
-import java.util.regex.Pattern;
-
 @Category(SmallTests.class)
 public class RegexStringComparatorTest {
   @ClassRule