Revert "Sending broadcast message when home screen is ready."

Revert "Receiving a broadcast message when home screen is ready."

Revert submission 16169565-b/199120420

Reason for revert: Breaking Build (b/207471332)
Reverted Changes:
Ibc101a249:Receiving a broadcast message when home screen is ...
I18628552a:Sending broadcast message when home screen is read...

Change-Id: Ib29eae2d58c9ae2e3002c0fa18265c6767733e22