Remove some deprecated code

qlib/contrib/model/pytorch_general_nn.py

@@ -163,7 +163,6 @@ class GeneralPTNN(Model):
         else:
             self.scheduler = scheduler(optimizer=self.train_optimizer)
 
-        self.fitted = False
         self.dnn_model.to(self.device)
 
     @property
@@ -327,29 +326,10 @@ class GeneralPTNN(Model):
         return preds
 
     def predict(self, dataset: DatasetH, segment: Union[Text, slice] = "test"):
-        if not self.fitted:
-            raise ValueError("model is not fitted yet!")
         x_test_pd = dataset.prepare(segment, col_set="feature", data_key=DataHandlerLP.DK_I)
         preds = self._nn_predict(x_test_pd)
         return pd.Series(preds.reshape(-1), index=x_test_pd.index)
 
-    def save(self, filename, **kwargs):
-        with save_multiple_parts_file(filename) as model_dir:
-            model_path = os.path.join(model_dir, os.path.split(model_dir)[-1])
-            # Save model
-            torch.save(self.dnn_model.state_dict(), model_path)
-
-    def load(self, buffer, **kwargs):
-        with unpack_archive_with_buffer(buffer) as model_dir:
-            # Get model name
-            _model_name = os.path.splitext(list(filter(lambda x: x.startswith("model.bin"), os.listdir(model_dir)))[0])[
-                0
-            ]
-            _model_path = os.path.join(model_dir, _model_name)
-            # Load model
-            self.dnn_model.load_state_dict(torch.load(_model_path, map_location=self.device))
-        self.fitted = True
-
 
 class AverageMeter:
     """Computes and stores the average and current value"""