[PyTorch] Remove unnecessary assert in maybe_resize_storage_cpu (#53724)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/53724
See new code comment -- stealAndSetStoragePtr calls set_storage_keep_dtype.
ghstack-source-id: 123636226
Test Plan: CI
Reviewed By: mruberry
Differential Revision: D26922164
fbshipit-source-id: fe1dd2b3e5f0876b8b41694ff2fb19b9ca2bae61
