[TensorExpr] Remove buf_ field from class Tensor. (#45390)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/45390
Tensor objects should always refer to their Function's bufs. Currently
we never create a Tensor with a buffer different than of its function,
but having it in two places seems incorrect and dangerous.
Differential Revision: D23952865
Test Plan: Imported from OSS
Reviewed By: nickgg
Pulled By: ZolotukhinM
fbshipit-source-id: e63fc26d7078427514649d9ce973b74ea635a94a
Author
Mikhail Zolotukhin
