Deprecates _aminmax (#71576)
Summary:
Replaces https://github.com/pytorch/pytorch/pull/62432. Existing callsites are updated.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/71576
Reviewed By: ngimel
Differential Revision: D33689960
Pulled By: mruberry
fbshipit-source-id: fad1ba78347ecec7fd48f21862c3eb606662b8f4
(cherry picked from commit 6cd438e9a156d9fc20e34f195721fd1a9374314b)