message: remove duplicate code
  remove duplicate code
diff: @@ -106,7 +106,6 @@ ComputeArgAndRetvalCores(const Graph& graph) {
  int index;
  TF_RETURN_IF_ERROR(GetNodeAttr(n->attrs(), "index", &index));
  TF_RET_CHECK(index >= 0) << "Negative _Retval index";
  - TF_ASSIGN_OR_RETURN(retval_cores[index], get_sharding_for_node(n));
  retval_cores[index] = core;
  }
  }
  