Move inplace_is_vmap_compatible to BatchedTensorImpl.h (#49118)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/49118
I need this in the next stack up. It seems useful to have as a helper
function.
Test Plan: - run tests
Reviewed By: izdeby
Differential Revision: D25563546
Pulled By: zou3519
fbshipit-source-id: a4031fdc4b2373cc230ba3c66738d91dcade96e2
