update code

Author: xilzy

graph_net/torch/backend/unstable_to_stable_backend.py

@@ -134,7 +134,6 @@ def _impl_unstable_to_stable_set_grad_enabled(self, gm):
         def replace_in_graph(graph_mod):
             for node in graph_mod.graph.nodes:
                 if node.op == "call_function":
-                    # 宽松匹配所有 set_grad_enabled 相关 target
                     if "set_grad_enabled" in str(node.target):
                         node.target = torch.set_grad_enabled
             graph_mod.recompile()