Kill AT_DISPATCH_ALL_TYPES_AND_C10_COMPLEX (#38792)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/38792
Test Plan: Imported from OSS
Differential Revision: D21669629
Pulled By: anjali411
fbshipit-source-id: f9dd46219ff90217d94315f7223b49cc4aeab091
