docstore: test the release (salesforce#101)

Author: sandeepvinayak

docstore/docstore-aws/src/main/java/com/salesforce/multicloudj/docstore/aws/AwsDocStore.java

@@ -49,16 +49,15 @@
 import software.amazon.awssdk.services.dynamodb.model.TableDescription;
 import software.amazon.awssdk.services.dynamodb.model.TransactWriteItem;
 import software.amazon.awssdk.services.dynamodb.model.TransactWriteItemsRequest;
-import software.amazon.awssdk.services.dynamodb.model.TransactionCanceledException;
 
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
-import java.util.HashSet;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ExecutionException;
 import java.util.function.Consumer;