[DataPipe] Removing usage of unbatch_level from .batch interface and DataFrame (#69393)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/69393
cc VitalyFedyunin ejguan NivekT
Test Plan: Imported from OSS
Reviewed By: anjali411
Differential Revision: D32849461
Pulled By: NivekT
fbshipit-source-id: 16abbe289ad2092faaa029fd78f3d6924e7b2ff4
