Revert "Make WindowContainer surfaces container layers by default."

This reverts commit 139c7776.

Reason: Device gets put into GL comp pretty much all the time,
trashing performance and battery.

Bug: 123686354
Bug: 122561221
Change-Id: Icf658f331c407d03e844557cc2531c034aa38083
Exempt-From-Owner-Approval: Simple revert