Remove input_channels / output_channels / with_bias from ConvOptions (#29838)
Summary:
Since torchvision is not using input_channels / output_channels / with_bias in ConvOptions anymore (https://github.com/pytorch/vision/pull/1576), we can remove the bridges now.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/29838
Differential Revision: D18531481
Pulled By: yf225
fbshipit-source-id: e48d9e8cf110095f83d9ed18b9fec020ec725f3e
