remove unrelated changes

docs/requirements.txt

@@ -0,0 +1,3 @@
+sphinx_rtd_theme
+sphinx
+sphinxcontrib-youtube==1.1.0

egs/librispeech/ASR/zipformer/pretrained.py

@@ -111,7 +111,6 @@ Note: ./zipformer/exp/pretrained.pt is generated by ./zipformer/export.py
 import argparse
 import logging
 import math
-import time
 from typing import List
 
 import k2
@@ -315,8 +314,6 @@ def main():
     waves = [w.to(device) for w in waves]
 
     logging.info("Decoding started")
-    start_time = time.time()
-
     features = fbank(waves)
     feature_lengths = [f.size(0) for f in features]
 
@@ -369,17 +366,12 @@ def main():
             hyps.append(token_ids_to_words(hyp))
     else:
         raise ValueError(f"Unsupported method: {params.method}")
-    
-    end_time = time.time()
-    elapsed_seconds = end_time - start_time
-
-    logging.info(f"elapsed seconds:, {elapsed_seconds}")
 
     s = "\n"
     for filename, hyp in zip(params.sound_files, hyps):
         s += f"{filename}:\n{hyp}\n\n"
     logging.info(s)
-    
+
     logging.info("Decoding Done")