[nnc] Removed setBufferMap method from LoopNest (#59496)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/59496
Test Plan: Imported from OSS
Reviewed By: ZolotukhinM
Differential Revision: D28915958
Pulled By: navahgar
fbshipit-source-id: 71e649c93fc67b36c37373f043c729aa835968a0
