Revert D35423078: [pkg] add zipfile unit tests
Test Plan: revert-hammer
Differential Revision:
D35423078 (https://github.com/pytorch/pytorch/commit/99ce996474e3bfeddbb6f147487c94b9ea3ac4cb)
Original commit changeset: 13cd0f82ec7d
Original Phabricator Diff: D35423078 (https://github.com/pytorch/pytorch/commit/99ce996474e3bfeddbb6f147487c94b9ea3ac4cb)
fbshipit-source-id: 4768af3c40cde0901492e121768ca8197b2374ac
(cherry picked from commit c72c0edab32574152d088ac2028a761ae45940d5)
