commit a758727c963948ae07e97c977a63b882216e8971
author Rubin Xu <rubinxu@google.com> Tue Jul 30 17:14:28 2019 +0100
committer Rubin Xu <rubinxu@google.com> Fri Aug 02 15:48:11 2019 +0100
tree a08fb451459d39d34a79146cda0f3453d3e0922f
parent b93dc48c85e7701cd4411c532e56b506ac14b46c

Remove support of legacy credential hash

CDD started to require hardware-based lockscreen authentication
(gatekeeper) since Android N. Support of legacy credential hash
(lockscreen password hashed directly on device) is now totally
obsolete and can be removed safely, provided that there is no
need to support an OTA from M (or before) straight to R.

Bug: 63619579
Test: atest frameworks/base/services/tests/servicestests/src/com/android/server/locksettings
Change-Id: Ie71fec3eb0eaba8ec4c8e33e791a3d553d9355f9