Revert D35124731: Automatically extern C extension modules in torch.package
Test Plan: revert-hammer
Differential Revision:
D35124731 (https://github.com/pytorch/pytorch/commit/0f27b4b7fcb5b693a373d7b67740471f966f59fe)
Original commit changeset: a4b7fdf3210e
Original Phabricator Diff: D35124731 (https://github.com/pytorch/pytorch/commit/0f27b4b7fcb5b693a373d7b67740471f966f59fe)
fbshipit-source-id: ee598f18d43ea1becb6f2673c7ae309e4b4dda35
(cherry picked from commit 6248897d18f4f02f0ad7353c4b78f1cbb12250ae)