The workers flag is not used

[RolandGao]

In train.py, line 87 says

@click.option('--workers', help='DataLoader worker processes', type=click.IntRange(min=1), default=3)

However, line 123 uses num_workers=3 regardless of the opts.workers flag:

c.data_loader_kwargs = dnnlib.EasyDict(pin_memory=True, num_workers=3, prefetch_factor=2)