empty_generic: Remove redundant device argument (#70612)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/70612
The device information is embedded in the `DataPtr` returned from the
allocator, so this argument is completely ignored.
Test Plan: Imported from OSS
Reviewed By: mruberry
Differential Revision: D33623681
Pulled By: ngimel
fbshipit-source-id: bea64707bb17d46debb0ed7c1175493df56fee77
