message: [TF/XLA] Minor clean up
diff: @@ -676,12 +676,10 @@ Status Encapsulator::Subgraph::AddFunctionCallNode(
  Status Encapsulator::GetFunctionNameAttr(Node const* node, string* attr) const {
  AttrSlice attrs = node->attrs();
  attr->clear();
  - bool found_group_attribute = false;
  for (const auto& node_attr : attrs) {
  if (node_attr.first == group_attribute_) {
  TF_RETURN_IF_ERROR(AttrValueHasType(node_attr.second, "string"));
  *attr = node_attr.second.s();
  - found_group_attribute = true;
  break;
  }
  }
  @@ -790,7 +788,6 @@ Status Encapsulator::SplitIntoSubgraphs(FunctionLibraryDefinition* library) {
  TF_RETURN_IF_ERROR(CopySubgraphNodes(&node_images));
  TF_RETURN_IF_ERROR(CopySubgraphEdges(node_images, &src_arg_pairs));
  -
  MarkGuaranteedConstants(*graph_in_, src_arg_pairs);
  for (auto& entry : subgraphs_) {
  