Remove VariableTracker.as_specialized (#112363)
Summary:
My local testing can't seem to find this function actually doing anything.
X-link: https://github.com/pytorch/pytorch/pull/112363
Approved by: https://github.com/yanboliang
Reviewed By: ZainRizvi
Differential Revision: D50819849
Pulled By: jansel
fbshipit-source-id: 2ef4dd2fef653986c1211dbcc709c3ae29751c2f
