[Bouncer] Do not Autosize numpad.

The autosizing logic seems to have inadvertent side effects. Will remove
this for now.

The autosizing logic was added in ag/20612038. I'm opting to fix forward
because other changes were added into that CL.

Fixes: 261552438
Test: open up bouncer.
Change-Id: I44c41c93ad235b09fc6e4e9966b24c6b4fdcd915