Remove zero_dim_dispatch_when_scalar (#37580)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/33094
Pull Request resolved: https://github.com/pytorch/pytorch/pull/37580
Differential Revision: D21380154
Pulled By: ezyang
fbshipit-source-id: 4556c7ca6126a7d382f6343aee14a7e46c498ac3
