Make `align_to` method-only. (#27304)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/27304
The ellipsis version of `align_to` only works if it is called as a
method. To prevent any confusion, this PR disables `torch.align_to` (but
keeps `Tensor.align_to`.
Test Plan: - [namedtensor ci]
Differential Revision: D17743809
Pulled By: zou3519
fbshipit-source-id: cf5c53dcf45ba244f61bb1e00e4853de5db6c241
