ARM: dts: hummingboard: Remove mention of nonexistent node

There is no pinctrl_usbotg_2 node in current Hummingboard dts files.
Drop reference to that.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

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

@@ -244,8 +244,7 @@ pinctrl_hummingboard_usbh1_vbus: hummingboard-usbh1-vbus {
 
 		pinctrl_hummingboard_usbotg_id: hummingboard-usbotg-id {
 			/*
-			 * Similar to pinctrl_usbotg_2, but we want it
-			 * pulled down for a fixed host connection.
+			 * We want it pulled down for a fixed host connection.
 			 */
 			fsl,pins = <MX6QDL_PAD_ENET_RX_ER__USB_OTG_ID 0x13059>;
 		};

arch/arm/boot/dts/imx6qdl-hummingboard2.dtsi

@@ -414,8 +414,7 @@ pinctrl_hummingboard2_usbh3_vbus: hummingboard2-usbh3-vbus {
 
 		pinctrl_hummingboard2_usbotg_id: hummingboard2-usbotg-id {
 			/*
-			 * Similar to pinctrl_usbotg_2, but we want it
-			 * pulled down for a fixed host connection.
+			 * We want it pulled down for a fixed host connection.
 			 */
 			fsl,pins = <MX6QDL_PAD_GPIO_1__USB_OTG_ID 0x13059>;
 		};