Revert D34284271: [TLC][checkpoint] Add unit test for StatefulComponentCheckpointAgent
Test Plan: revert-hammer
Differential Revision:
D34284271 (https://github.com/pytorch/pytorch/commit/f49a93ba56d9bb3f73d4bea13ae5331300362235)
Original commit changeset: 58f84c69782a
Original Phabricator Diff: D34284271 (https://github.com/pytorch/pytorch/commit/f49a93ba56d9bb3f73d4bea13ae5331300362235)
fbshipit-source-id: 87deabae3c3c10c5a9532825ca33d78c5251958e
(cherry picked from commit 03bc05a970e2c4063c8f6e45c70e167cf5c3f1cf)
