Move Method::lowered_graph to a separate pass out of the Method class. (#28242)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/28242
There is no reason to have it in a general API of Module/Method - it's
just another graph pass. It was there because some time ago modules were
not first class and all graphs were lowered. After that changed, this
API was added for easier transition, but now we don't need it anymore.
Test Plan: Imported from OSS
Differential Revision: D17986724
Pulled By: ZolotukhinM
fbshipit-source-id: 279a1ec450cd8fac8164ee581515b09f1d755630
Author
Mikhail Zolotukhin
