Removed TODO since validations are handled in BatchPverrideConfiguration

Author: joviegas

services/sqs/src/main/java/software/amazon/awssdk/services/sqs/internal/batchmanager/DefaultSqsAsyncBatchManager.java

@@ -36,7 +36,6 @@
 
 @SdkInternalApi
 public final class DefaultSqsAsyncBatchManager implements SqsAsyncBatchManager {
-    // TODO : update the validation here while implementing this class in next PR
     private final SqsAsyncClient client;
 
     private final SendMessageBatchManager sendMessageBatchManager;