run te only for profiling executor (#38591)
Summary:
* Disable the mode where PE can still run the old fuser.
* Clean up
Pull Request resolved: https://github.com/pytorch/pytorch/pull/38591
Differential Revision: D21643664
Pulled By: Krovatkin
fbshipit-source-id: 6753ed6bdc544698a1340e59a624608ff3abf7f9
