DO NOT MERGE ANYWHERE Remove BottomNavigationView for 24.2 release.

BottomNavigationView was deemed to be not in a good enough shape to ship.
This CL removes all references to BottomNavigationView in 24.2 branch.

Bug: 30426776
Change-Id: Ib03402ca86a9532f2568784b8b9af49d7929d18e
21 files changed