Enable TestTorchbind on Windows (#96507)
This PR addresses the issues opened in #25155. However, those specific tests are no longer used since after #37473 they were moved to test_torchbind.
This PR enable TestTorchbind on Windows.
test_custom_class.py is no longer used after that commit.
In the original issue, there were problems on Windows with those tests so I tested the updated ones to see if they work.
I had no issues with them so this enables them on Windows.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/96507
Approved by: https://github.com/ezyang
