add two pass decoding

egs/libriheavy/ASR/zipformer_prompt_asr/decode_bert_2pass.py

@@ -419,14 +419,6 @@ def decode_one_batch(
     if params.use_ls_context_list and params.use_ls_test_set:
         #fixed_sentence = "Mixed-case English transcription, with punctuation. Actually, it is fully not related."
         pre_texts = [biasing_dict[id] for id in cut_ids]
-        #pre_texts = batch["supervisions"]["text"]
-        #pre_texts = [get_substring(s, min_len=20, max_len=25) for s in pre_texts]
-        # pre_texts = []
-        # import random
-        # for i, s in enumerate(batch["supervisions"]["text"]):
-        #     s = s.split()
-        #     random.shuffle(s)
-        #     pre_texts.append(" ".join(s))
         
     if params.use_style_prompt:
         style_texts = batch["supervisions"]["style_text"]