[SYSTEMDS-3729] Fix federate response of roll function

This patch removes unnecessary data transfer and data sharing, which was there for debugging only.

Closes #2131.

src/main/java/org/apache/sysds/runtime/instructions/fed/ReorgFEDInstruction.java

@@ -429,7 +429,7 @@ public FederatedResponse execute(ExecutionContext ec, Data... data) {
 				resBlock = oriBlock;
 			}
 			ec.setMatrixOutput(String.valueOf(_outputID), resBlock);
-			return new FederatedResponse(FederatedResponse.ResponseType.SUCCESS, resBlock);
+			return new FederatedResponse(FederatedResponse.ResponseType.SUCCESS);
 		}
 
 		@Override