Revert D34126542: [Qunat] Add ConvTranspose reference module
Test Plan: revert-hammer
Differential Revision:
D34126542 (https://github.com/pytorch/pytorch/commit/7a031ec17f5cfc052e618694d4bee28381a6051d)
Original commit changeset: 7da167695a1f
Original Phabricator Diff: D34126542 (https://github.com/pytorch/pytorch/commit/7a031ec17f5cfc052e618694d4bee28381a6051d)
fbshipit-source-id: 14e40884807b9908017ae30af83a8dea23ff1f0f
(cherry picked from commit f99a7f5a697b5ed411b061e3849dc29105126742)
