[TensorExpr] Clean-up logic for copying input tensors and remove some dead code. (#70535)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/70535
This also fixes handling of inputs that happen to be outputs (they
require copy).
Test Plan: Imported from OSS
Reviewed By: pbelevich
Differential Revision: D33399116
Pulled By: ZolotukhinM
fbshipit-source-id: 9845838eb653b82ae47b527631b51893990d5319
Author
Mikhail Zolotukhin
