message: Remove unused arg and variable in GetTypeAttrs()
diff: @@ -231,14 +231,12 @@ class NodeTypeAttrMap {
  bool is_initialized() const { return graph_ != nullptr; }
  // Returns the set of all type attributes in the given node.
  - absl::flat_hash_set<TypeAttrId> GetTypeAttrs(
  - const NodeDef& node, bool exclude_if_used_as_ref = true) const {
  + absl::flat_hash_set<TypeAttrId> GetTypeAttrs(const NodeDef& node) const {
  DCHECK(is_initialized()) << "NodeTypeAttrMap is not initialized";
  absl::flat_hash_set<TypeAttrId> type_attrs;
  const auto iter = type2io_.find(&node);
  CHECK(iter != type2io_.end());
  for (const auto& key_value : iter->second) {
  - TypeAttrId type_attr = key_value.first;
  type_attrs.insert(key_value.first);
  }
  return type_attrs;
  