Kill zero_dim_tensor_only codegen, it's not used anymore. (#28514)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/28514
Verified that there are no generated code changes after applying the diff.
Test Plan: Imported from OSS
Differential Revision: D18086966
Pulled By: gchanan
fbshipit-source-id: 86c660ca78dfeeda2c888947d557cee2c4df08aa
