uboot-mediatek: remove wmcpu_emi dts node leftovers

wmcpu_emi node was removed in commit:
b286fd8a39 ("uboot-mediatek: adjust the reserved memory regions")

Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
Link: https://github.com/openwrt/openwrt/pull/19855
Signed-off-by: Robert Marko <robimarko@gmail.com>

package/boot/uboot-mediatek/patches/436-add-glinet-mt6000.patch

@@ -1,6 +1,6 @@
 --- /dev/null
 +++ b/arch/arm/dts/mt7986a-glinet-gl-mt6000.dts
-@@ -0,0 +1,135 @@
+@@ -0,0 +1,131 @@
 +// SPDX-License-Identifier: GPL-2.0
 +
 +/dts-v1/;
@@ -132,10 +132,6 @@
 +	non-removable;
 +	status = "okay";
 +};
-+
-+&wmcpu_emi {
-+	status = "disabled";
-+};
 --- /dev/null
 +++ b/configs/mt7986a_glinet_gl-mt6000_defconfig
 @@ -0,0 +1,104 @@