remove signature name for load ernie module

demo/ernie-classification/question_answering.py

@@ -68,7 +68,7 @@ if __name__ == '__main__':
     num_labels = len(reader.get_labels())
 
     input_dict, output_dict, program = module.context(
-        sign_name="tokens", trainable=True, max_seq_len=args.max_seq_len)
+        trainable=True, max_seq_len=args.max_seq_len)
 
     with fluid.program_guard(program):
         label = fluid.layers.data(name="label", shape=[1], dtype='int64')

demo/ernie-classification/question_matching.py

@@ -68,7 +68,7 @@ if __name__ == '__main__':
     num_labels = len(reader.get_labels())
 
     input_dict, output_dict, program = module.context(
-        sign_name="tokens", trainable=True, max_seq_len=args.max_seq_len)
+        trainable=True, max_seq_len=args.max_seq_len)
 
     with fluid.program_guard(program):
         label = fluid.layers.data(name="label", shape=[1], dtype='int64')

demo/ernie-seq-labeling/finetune_with_hub.py

@@ -67,7 +67,7 @@ if __name__ == '__main__':
     num_labels = len(reader.get_labels())
 
     input_dict, output_dict, program = module.context(
-        sign_name="tokens", trainable=True, max_seq_len=args.max_seq_len)
+        trainable=True, max_seq_len=args.max_seq_len)
 
     with fluid.program_guard(program):
         label = fluid.layers.data(