config: Remove persist.sys.dun.override again

 * It was removed in 2019, but somehow commit 8926990
   brought it back again.

Change-Id: I973c03f7eed87c46973b42fd7bda04ed1ad27935
Signed-off-by: Jackeagle <jackeagle102@gmail.com>
diff --git a/config/common_mobile.mk b/config/common_mobile.mk
index 9f2bf86..4dfcc98 100644
--- a/config/common_mobile.mk
+++ b/config/common_mobile.mk
@@ -6,11 +6,6 @@
     ro.config.notification_sound=Argon.ogg \
     ro.config.alarm_alert=Hassium.ogg
 
-ifneq ($(TARGET_BUILD_VARIANT),user)
-# Thank you, please drive thru!
-PRODUCT_SYSTEM_DEFAULT_PROPERTIES += persist.sys.dun.override=0
-endif
-
 # Charger
 PRODUCT_PACKAGES += \
     charger_res_images