Revert D33141011: extract //c10/macros into its own package
Test Plan: revert-hammer
Differential Revision:
D33141011 (https://github.com/pytorch/pytorch/commit/8f4c724bb6fe91998cef28f6a16dff79b9d927ad)
Original commit changeset: caa97448f922
Original Phabricator Diff: D33141011 (https://github.com/pytorch/pytorch/commit/8f4c724bb6fe91998cef28f6a16dff79b9d927ad)
fbshipit-source-id: 79423ed51f9a43ecf1f716a739c74949b66fadb4
