fix bmtrain tutorial

examples/tutorial/2_with_bmtrain.py

@@ -9,7 +9,15 @@ from sklearn.metrics import accuracy_score, recall_score, f1_score
 
 import bmtrain as bmt
 
-from model_center import get_args
+from model_center.arguments import add_model_config_args, add_training_args, argparse
+def get_args():
+    parser = argparse.ArgumentParser()
+    parser = add_model_config_args(parser)
+    parser = add_training_args(parser)
+    group = parser.add_argument_group('delta', 'delta configurations')
+    group.add_argument('--delta-type', '--delta_type', type=str, help='delta type')
+    args = parser.parse_args()
+    return args
 from model_center.model import Bert
 from model_center.tokenizer import BertTokenizer
 from model_center.dataset.bertdataset import DATASET