Remove attempToRecoverType (#26767)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/26767
Now that we have tagged ivalues, we can accurately recover the type with
`ivalue.type()`. This reomoves the other half-implemented pathways that
were created because we didn't have tags.
Test Plan: Imported from OSS
Differential Revision: D17561191
Pulled By: zdevito
fbshipit-source-id: 26aaa134099e75659a230d8a5a34a86dc39a3c5c
