Remove torchaudio

Signed-off-by: Jael Gu <mengjia.gu@zilliz.com>

vggish_input.py

@@ -23,8 +23,6 @@ import resampy
 import mel_features
 import vggish_params
 
-import torchaudio
-
 
 def waveform_to_examples(data, sample_rate, return_tensor=True):
     """Converts audio waveform into an array of examples for VGGish.
@@ -78,22 +76,3 @@ def waveform_to_examples(data, sample_rate, return_tensor=True):
             log_mel_examples, requires_grad=True)[:, None, :, :].float()
 
     return log_mel_examples
-
-
-def wavfile_to_examples(wav_file, return_tensor=True):
-    """
-    Convenience wrapper around waveform_to_examples() for a common WAV format.
-
-    Args:
-        wav_file:
-            String path to a file, or a file-like object.
-            The file is assumed to contain WAV audio data with signed 16-bit PCM samples.
-        return_tensor:
-            Return data as a Pytorch tensor ready for VGGish
-
-  Returns:
-    See waveform_to_examples.
-  """
-    data, sr = torchaudio.load(wav_file)
-    wav_data = data.detach().numpy().transpose()
-    return waveform_to_examples(wav_data, sr, return_tensor)