Revert D24740727: torch.Assert: make it torch.jit.script'able
Test Plan: revert-hammer
Differential Revision:
D24740727 (https://github.com/pytorch/pytorch/commit/b787e748f0440d763f009a9304726c4df573bb99)
Original commit changeset: c7888e769c92
fbshipit-source-id: 1e097bd9c0f8b04bea0e0346317a126b42a3dc4f
