arm64: dts: qcom: apq8039-t2: Drop inexistent property

'pin-switch-delay-us' is not used anywhere in the mainline kernel.
Drop it.
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Link: https://lore.kernel.org/r/20230627-topic-more_bindings-v1-4-6b4b6cd081e5@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/apq8039-t2.dts

@@ -374,7 +374,6 @@ &usb {
 	pinctrl-0 = <&pinctrl_otg_default>;
 	pinctrl-1 = <&pinctrl_otg_host>;
 	pinctrl-2 = <&pinctrl_otg_device>;
-	pin-switch-delay-us = <100000>;
 	usb-role-switch;
 	status = "okay";