delete assert in params

scripts/convert_t2t_to_fairseq.py

@@ -445,7 +445,6 @@ def convert_settings(settings):
     args['decoder_normalize_before'] = True
     args['attention_dropout'] = 0.1
     args['relu_dropout'] = 0.1
-  assert share_all_embedding ^ share_decoder_input_and_softmax
   if share_all_embedding:
     args['share_all_embeddings'] = True
   if share_decoder_input_and_softmax: