mb/google/drallion: Drop GMA default panel

Redundant when generic gfx driver is used

Change-Id: I8ed1eede05f531f4c76e7fa168c2b92fae7e45cb
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80176
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
diff --git a/src/mainboard/google/drallion/variants/drallion/devicetree.cb b/src/mainboard/google/drallion/variants/drallion/devicetree.cb
index 9fe0a69..eecdc00 100644
--- a/src/mainboard/google/drallion/variants/drallion/devicetree.cb
+++ b/src/mainboard/google/drallion/variants/drallion/devicetree.cb
@@ -220,7 +220,6 @@
 	device domain 0 on
 		device pci 00.0 on  end # Host Bridge
 		device pci 02.0 on
-			register "gfx" = "GMA_DEFAULT_PANEL(0)"
 			chip drivers/gfx/generic
 				register "device_count" = "1"
 				register "device[0].name" = ""LCD0""