Remove unused import

Author: davidh44

services/s3/src/main/java/software/amazon/awssdk/services/s3/multipart/MultipartConfiguration.java

@@ -18,7 +18,6 @@
 import software.amazon.awssdk.annotations.SdkPublicApi;
 import software.amazon.awssdk.core.async.AsyncRequestBody;
 import software.amazon.awssdk.core.async.AsyncResponseTransformer;
-import software.amazon.awssdk.core.internal.async.ByteArrayAsyncResponseTransformer;
 import software.amazon.awssdk.services.s3.S3AsyncClient;
 import software.amazon.awssdk.services.s3.S3AsyncClientBuilder;
 import software.amazon.awssdk.services.s3.model.CopyObjectRequest;