Revert "Stable sort for CPU (#50052)" (#50752)
Summary:
This reverts commit c99f35605105f7366bcf4709df534da3ceab9a15.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/50752
Reviewed By: zou3519
Differential Revision: D25958146
Pulled By: glaringlee
fbshipit-source-id: f4068d038f9bd337bac8b673eaeb46a4646f6c77
