Revert D34283475: ci: Add documentation for github actions
Test Plan: revert-hammer
Differential Revision:
D34283475 (https://github.com/pytorch/pytorch/commit/5cf2228405f20cd73ec40c188c8851c9897777db)
Original commit changeset: a4ac9711c19a
Original Phabricator Diff: D34283475 (https://github.com/pytorch/pytorch/commit/5cf2228405f20cd73ec40c188c8851c9897777db)
fbshipit-source-id: c8453b8edf711cf877313016c38016b15a47fd3f
(cherry picked from commit 20c97b6293517c773b49395bdf53b53deaa7f89f)
