fix: hide helper classes/functions from torch.hub.list
fix: hide helper classes/functions from torch.hub.list

From https://pytorch.org/docs/stable/hub.html:
"Callables prefixed with underscore are considered as helper functions which won’t show up in torch.hub.list()."

pyannote/pyannote-audio,pyannote/pyannote-audio,pyannote/pyannote-audio