ARM: dts: imx6qdl-sabrelite: remove usdhc4 wp-gpio

On Sabre Lite usdhc4 is a micro sd slot, which has no
write protect.
Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx6qdl-sabrelite.dtsi

@@ -115,7 +115,6 @@ imx6q-sabrelite {
 		pinctrl_hog: hoggrp {
 			fsl,pins = <
 				MX6QDL_PAD_NANDF_D6__GPIO2_IO06 0x80000000
-				MX6QDL_PAD_NANDF_D7__GPIO2_IO07 0x80000000
 				MX6QDL_PAD_EIM_D19__GPIO3_IO19  0x80000000
 				MX6QDL_PAD_EIM_D22__GPIO3_IO22  0x80000000
 				MX6QDL_PAD_EIM_D23__GPIO3_IO23  0x80000000
@@ -285,7 +284,6 @@ &usdhc4 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_usdhc4>;
 	cd-gpios = <&gpio2 6 0>;
-	wp-gpios = <&gpio2 7 0>;
 	vmmc-supply = <&reg_3p3v>;
 	status = "okay";
 };