Revert "Fix user switcher flicker."

This reverts commit 334ebcea1bd4c211b288878881610c5191cb30b3.

Reason for revert: User switcher is disappearing after switching users
Bug: 290355544
Fixes: 294593868

Change-Id: Id32661934b6d2d381576972cefb614b1e7d647b9
2 files changed