no need to rewind

Author: joeyzhao2018

dd-java-agent/instrumentation/aws-java-sns-1.0/src/main/java/datadog/trace/instrumentation/aws/v1/sns/SnsInterceptor.java

@@ -66,7 +66,6 @@ public AmazonWebServiceRequest beforeMarshalling(AmazonWebServiceRequest request
       for (PublishBatchRequestEntry entry : pmbRequest.getPublishBatchRequestEntries()) {
         Map<String, MessageAttributeValue> messageAttributes = entry.getMessageAttributes();
         if (messageAttributes.size() < 10) {
-          binaryValue.rewind();
           messageAttributes.put(
               "_datadog",
               new MessageAttributeValue().withDataType("Binary").withBinaryValue(binaryValue));