[reland] remove typed StorageImpl::data() and StorageImpl::unsafe_data() (#98411)
Original commit changeset: a466b3cb6a0a
Original Phabricator Diff: D44629941
Differential Revision: [D44709004](https://our.internmc.facebook.com/intern/diff/D44709004/)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/98411
Approved by: https://github.com/ezyang
