Collapse case statement into one for $ARCH+$SUBARCH since it only checks for armhf+omap4

live-build/auto/config

@@ -173,10 +173,8 @@ esac
 case $PROJECT in
 	ubuntu|ubuntu-dvd)
 		add_task install minimal standard
-		case $ARCH in
-			armhf)
-				case $SUBARCH in
-					omap4)
+		case "$ARCH+$SUBARCH" in
+			armhf+omap4)
 				# Don't use the task as this drags in the regular X
 				# stack (the metapackage doesn't). We want the
 				# "reverted" one.
@@ -189,11 +187,6 @@ case $PROJECT in
 				add_task install ubuntu-desktop
 				;;
 		esac
-				;;
-			*)
-				add_task install ubuntu-desktop
-				;;
-		esac
 		LIVE_TASK='ubuntu-live'
 		;;