remove unused imports, extra whitespaces

Author: ahmarsuhail

hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/DefaultS3ClientFactory.java

@@ -40,15 +40,12 @@
 import software.amazon.awssdk.services.s3.S3Configuration;
 import software.amazon.awssdk.services.s3.multipart.MultipartConfiguration;
 import software.amazon.awssdk.transfer.s3.S3TransferManager;
-import software.amazon.encryption.s3.S3AsyncEncryptionClient;
-import software.amazon.encryption.s3.S3EncryptionClient;
 
 import org.apache.commons.lang3.StringUtils;
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.conf.Configured;
-import org.apache.hadoop.fs.s3a.impl.CSEMaterials;
 import org.apache.hadoop.fs.s3a.statistics.impl.AwsStatisticsCollector;
 import org.apache.hadoop.fs.store.LogExactlyOnce;
 

hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3ClientFactory.java

@@ -83,7 +83,6 @@ S3Client createS3Client(URI uri,
   S3AsyncClient createS3AsyncClient(URI uri,
       S3ClientCreationParameters parameters) throws IOException;
 
-
   /**
    * Creates a new {@link S3TransferManager}.
    *

hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/MockS3ClientFactory.java

@@ -32,8 +32,6 @@
 import software.amazon.awssdk.services.s3.model.ListMultipartUploadsResponse;
 import software.amazon.awssdk.transfer.s3.S3TransferManager;
 
-import org.apache.hadoop.fs.s3a.impl.CSEMaterials;
-
 /**
  * An {@link S3ClientFactory} that returns Mockito mocks of the {@link S3Client}
  * interface suitable for unit testing.
@@ -63,7 +61,6 @@ public S3AsyncClient createS3AsyncClient(URI uri, final S3ClientCreationParamete
     return s3;
   }
 
-
   @Override
   public S3TransferManager createS3TransferManager(S3AsyncClient s3AsyncClient) {
     S3TransferManager tm = mock(S3TransferManager.class);