move wav2 to server.py

utils.py

@@ -8,7 +8,6 @@ import subprocess
 import numpy as np
 from scipy.io.wavfile import read
 import torch
-from av import open as avopen
 
 MATPLOTLIB_FLAG = False
 
@@ -292,18 +291,3 @@ class HParams():
 
     def __repr__(self):
         return self.__dict__.__repr__()
-
-def wav2(i, o, format):
-  inp = avopen(i, 'rb')
-  out = avopen(o, 'wb', format=format)
-  if format == "ogg": format = "libvorbis"
-
-  ostream = out.add_stream(format)
-
-  for frame in inp.decode(audio=0):
-      for p in ostream.encode(frame): out.mux(p)
-
-  for p in ostream.encode(None): out.mux(p)
-
-  out.close()
-  inp.close()