Revert "[Feature][API-794]when a/b slot broken, rollback and repair it.-2.system partition rollback"

This reverts commit f8bd52d8ed9a459830a7769799facede3a2b6dca.

Reason for revert: <INSERT REASONING HERE>

Change-Id: I7c038d205204e3d658932e27429a3268e7744563
6 files changed