Remove unboxed only from AMP registrations for cat. (#39156)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/39156
TensorList is now supported for boxing, so we can remove
unboxed only from it. I didn't check if there were other
operators that were incorrectly classified.
Fixes https://github.com/pytorch/pytorch/issues/38958
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Test Plan: Imported from OSS
Differential Revision: D21819821
Pulled By: ezyang
fbshipit-source-id: 6dcf91bc196554e1721d2c704f3bf524f069534b
