Revert "Making tablet grid scalable and tuning size"

Revert "[automerge] Making tablet grid scalable and tuning size ..."

Revert submission 17607211-aosp_tablet_tune

Reason for revert: Breaking a test b/228490147
Reverted Changes:
I88e581231:[automerge] Making tablet grid scalable and tuning...
I078d19905:Making tablet grid scalable and tuning size
Original bug: b/227344807

Change-Id: Ie6e55edcf5b82b73ad2c8ed7ffd5f0fa5b53594a