Revert D26237328: Add compare_set operation and test to TCPStore
Test Plan: revert-hammer
Differential Revision:
D26237328 (https://github.com/pytorch/pytorch/commit/7d00aec6bc347b1b14c2f1a114efbd467f65c63c)
Original commit changeset: c6837a4cc34f
fbshipit-source-id: 662f8067ead9bce0da13b35d393fb781635dd2b9
