update code

Author: G2uge

graph_net/torch/backend/unstable_to_stable_backend.py

@@ -153,8 +153,6 @@ def _impl_unstable_to_stable_special_logit(self, gm):
 
     # replace this line with modification code for task 118 (torch._C._nn.softplus)
 
-    # replace this line with modification code for task 119 (torch._C._nn.one_hot)
-
     def _impl_unstable_to_stable_one_hot(self, gm):
         """
         Convert torch._C._nn.one_hot to torch.nn.functional.one_hot