ramips: remove unnecessary LED declaration for WT1520 in diag.sh

This device doesn't have defined LEDs in its dts file.

Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@46635 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/ramips/base-files/etc/diag.sh

@@ -208,9 +208,6 @@ get_status_led() {
 	wnce2001)
 		status_led="netgear:green:power"
 		;;
-	nexx-wt1520)
-		status_led="nexx-wt1520:white:power"
-		;;
 	wt3020)
 		status_led="nexx:blue:power"
 		;;