Revert "NavigationBar : Customization Patch-set 2"

This reverts commit 29b1001346bf4a8c9b97bef199b0709a0c7b6a92.

Conflicts:
	packages/SystemUI/res/drawable-xhdpi/ic_sysbar_menu_big.png
	packages/SystemUI/res/drawable-xhdpi/ic_sysbar_menu_big_land.png