Imports fix

Author: mukund-thakur

hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/EncryptionTestUtils.java

@@ -19,12 +19,10 @@
 package org.apache.hadoop.fs.s3a;
 
 import java.io.IOException;
-import java.nio.charset.StandardCharsets;
 import java.util.Map;
 import java.util.Optional;
 
 import org.apache.hadoop.fs.s3a.impl.HeaderProcessing;
-import org.apache.hadoop.io.IOUtils;
 import org.assertj.core.api.Assertions;
 import software.amazon.awssdk.services.s3.model.HeadObjectResponse;