Revert D28474981: Create CUDA-aware futures in RequestCallback
Test Plan: revert-hammer
Differential Revision:
D28474981 (https://github.com/pytorch/pytorch/commit/027c68ef004874b73bc53563238a4fe10fc5fa33)
Original commit changeset: 492b8e71a43d
fbshipit-source-id: 0697c0922cd6bcbea2505efeecbbcbb3ffcfff2b
