Signed-off-by: Eli Uriegas <eliuriegas@fb.com>

Remove duplicate --bits command line parameter. It's producing a warning with sox.

This reverts commit 9395030.

Summary:
Pull Request resolved: pytorch/pytorch#51319

We were going out of our way to accommodate `IValue::to<Tensor>` returning a copy of the inner Tensor. `IValue::toTensor` is capable of returning a reference without copying, so if we use it directly, we can allow kernels that want to take `Tensor &` to do so!
As a bonus, we get reduced build times.
ghstack-source-id: 121378961

Reviewed By: bhosmer

Differential Revision: D26138549

fbshipit-source-id: b0f830527da360c542c815bef2f7e1692615b32a

Co-authored-by: Scott Wolchok <swolchok@fb.com>

* Fix fileobj I/O undeterministic behavior

Ever since the file-like object support was added in #1158, the test
was occasionally failing in CI. This PR fixes this.

Numpy is a dependency of pytorch so we should let it get resolved as it
install pytorch

Signed-off-by: Eli Uriegas <eliuriegas@fb.com>

Some audio formats like `gsm` does not have valid frame numbers when opened. But `libsox` can properly handle these audios, so checking if `length > 0` is not necessary and too strict.