Revert D28574083: Set and propagate devices in RRef completion future
Test Plan: revert-hammer
Differential Revision:
D28574083 (https://github.com/pytorch/pytorch/commit/23df70359a3fb4d1325265fff6c0e6285f3a9fda)
Original commit changeset: 5c89902cdc5c
fbshipit-source-id: e48043b6c4fb8a6f383f78e1aa88f7614f9fa13a
