Camera: video stabilization setting - don't default enable

This partially reverts:
https://github.com/CyanogenMod/android_packages_apps_Camera2/commit/8dc898aec74fe96b9411872eef8748727166a021

Causing camcorder crash on HLTE and probably other devices.

Much safer for devices wishing this enabled by default to set this
in an overlay.

Change-Id: Iaae388023efe3773ae94f01c4774359a1157b8a2