Revert "m8: add volume rocker wake support"

This reverts commit b62ad40e87c08af8c1634125a4fe4cea49b79cc2.

1) our volume rocker wake is on CarbonFibers
2) we show it by default (who doesn't have volume buttons?)

Change-Id: I940bac492872ccd57bea1e10cf896478e22d86ac