mediatek: enable NMBM remapping for NWA50AX Pro UBI

Don't skip remapping of the UBI area for the ZyXEL NWA50AX Pro. This is
due to the kernel being loaded from the UBI partition by U-Boot.

Link: https://github.com/openwrt/openwrt/pull/13335

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

target/linux/mediatek/dts/mt7981b-zyxel-nwa50ax-pro.dts

@@ -115,10 +115,6 @@
 		mediatek,bmt-max-ratio = <1>;
 		mediatek,bmt-max-reserved-blocks = <64>;
 
-		mediatek,bmt-remap-range =
-			<0x0 0x580000>,
-			<0xef00000 0xef80000>;
-
 		partitions {
 			compatible = "fixed-partitions";
 			#address-cells = <1>;