Back out "[shard] use scatter in shard_parameter API" (#75295)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/75295
Original commit changeset: c823c5d0066a
Original Phabricator Diff: D33933419 (https://github.com/pytorch/pytorch/commit/288de548fd0e270b527d941f8d08302006ad9fa5)
https://github.com/pytorch/pytorch/pull/72160 broke some sharded tensor tests. Let's revert it first and reland it again once the test failure has been fixed.
ghstack-source-id: 153135278
(Note: this ignores all push blocking failures!)
Test Plan: CI
Reviewed By: wanchaol
Differential Revision: D35418031
fbshipit-source-id: a4435a62d4487a927d0cf79624afe4f0951809c8
(cherry picked from commit a20d1190fa09fee08534aa91a52ffab324edfdd9)
