Remove custom GAIA_DOMAIN logic

Change-Id: I2ff633a8d29dd719d0b52a24ea700b3ad6e0c564

.config

@@ -19,15 +19,6 @@ GAIA_PATH=${ANDROID_BUILD_TOP}/gaia
 GECKO_OBJDIR=${ANDROID_BUILD_TOP}/out/target/product/${DEVICE}/obj/objdir-gecko
 
 
-# Default GAIA_DOMAIN away from gaiamobile.org to prevent the UI from
-# automatically updating itself to an unknown version
-#
-# TODO: This GAIA_DOMAIN logic is duplicated in Android.mk.  Fragile.
-: ${GAIA_DOMAIN:=example.com}
-# 'export' need to propagate the variable into |flash gaia|
-export GAIA_DOMAIN
-
-
 __flash_device()
 {
 	if [ "$1" = "ext" ]; then

Android.mk

@@ -26,15 +26,6 @@
 # IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 
-# Default GAIA_DOMAIN away from gaiamobile.org to prevent the UI from
-# automatically updating itself to an unknown version
-#
-# TODO: This GAIA_DOMAIN logic is duplicated in .config.  Fragile.
-GAIA_DOMAIN?=example.com
-# 'export' need to propagate the variable into the Gaia sub-make
-export GAIA_DOMAIN
-
-
 LOCAL_PATH:= $(call my-dir)
 
 FAKETOOLS_DX := $(abspath $(LOCAL_PATH)/faketools/dx)