setActiveUser is removed from the @hide API surface and is no longer
necessary. The framework ensures that the correct user is set without
an explicit call, since userId is sent as a parameter to each of the
methods already.
Bug: 157790417
Test: See testing from frameworks/base change (12/n) from the same
gerrit topic
Change-Id: Id88b818ed0bb1f75f18ac8e9ba7aff2a9b80b319
Bug: 110589286
Test: fingerprint enrolling still works
Test: enrollment flow with and without a pin set up still works properly
Test: enrollment continues when configuration changes, stops otherwise
Change-Id: I39f76c7f1a16e9533cef573f87cf4b81cb20cb18
