fix typo

src/transformers/modeling_utils.py

@@ -1281,7 +1281,7 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin):
         if self.config.is_encoder_decoder:
             # do not return first <EOS> token
             return decoded[:, 1:]
-#        return decoded
+        return decoded
 
     # force one of token_ids to be generated by setting prob of all other tokens to 0.
     def _force_token_ids_generation(self, scores, token_ids):