Turn off scalar_check for reductions _th_max, _th_min. (#29949)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/29949
The underlying functions handle this already.
Test Plan: Imported from OSS
Differential Revision: D18548047
Pulled By: gchanan
fbshipit-source-id: 123c9297db4e4315da9b1d996ac8b41aa1b4c7bc
