Revert D32706197: Sparse: Implement simple unary ufuncs operators
Test Plan: revert-hammer
Differential Revision:
D32706197 (https://github.com/pytorch/pytorch/commit/fbaa19a6fa6c7d07ecd74e5ebf3c5d0fc77ecc51)
Original commit changeset: 65e1acb36457
fbshipit-source-id: 45c4b486f9eee200d5a1f6d46d267617124f8a5e
