mips: dts: ingenic: Remove unneeded probe-type properties

The "probe-type" property was only needed when used with the
(long obsolete) "direct-mapped" compatible value.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

arch/mips/boot/dts/ingenic/jz4725b.dtsi

@@ -366,7 +366,6 @@ bch: ecc-controller@130d0000 {
 
 	rom: memory@1fc00000 {
 		compatible = "mtd-rom";
-		probe-type = "map_rom";
 		reg = <0x1fc00000 0x2000>;
 
 		bank-width = <4>;

arch/mips/boot/dts/ingenic/jz4770.dtsi

@@ -461,7 +461,6 @@ usb_otg: usb@13440000 {
 
 	rom: memory@1fc00000 {
 		compatible = "mtd-rom";
-		probe-type = "map_rom";
 		reg = <0x1fc00000 0x2000>;
 
 		bank-width = <4>;