zyxel-bootconfig: clean up script

Drop unused variable and fix identation.

Signed-off-by: David Bauer <[email protected]>

package/utils/zyxel-bootconfig/files/95_apply_bootconfig

@@ -1,12 +1,10 @@
 apply_bootconfig() {
 	. /lib/functions.sh
 
-	local part
-
 	case $(board_name) in
 	zyxel,nwa50ax|\
 	zyxel,nwa55axe)
-        mtd_idx=$(find_mtd_index "bootconfig")
+	        mtd_idx=$(find_mtd_index "bootconfig")
 		zyxel-bootconfig "/dev/mtd$mtd_idx" set-image-status 0 valid
 		zyxel-bootconfig "/dev/mtd$mtd_idx" set-active-image 0
 		;;