message: Update wav_to_features.py
  Remove the leading comma in the generated float array. Withi this leading comma, the generated C code can't be compiled.
diff: @@ -117,7 +117,7 @@ def wav_to_features(sample_rate, clip_duration_ms, window_size_ms,
  for value in features.flatten():
  if i == 0:
  f.write('\n ')
  - f.write(' ,%f' % value)
  + f.write('%f, ' % value)
  i = (i + 1) % 10
  f.write('\n};\n')
  