ARM: tegra: colibri_t20: iris: drop unused i2c_ddc label

Drop unused i2c_ddc label.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm/boot/dts/tegra20-colibri-iris.dts

@@ -139,7 +139,7 @@ rtc@68 {
 	/* CAM_I2C (I2C3): unused */
 
 	/* DDC_CLOCK/DATA on X3 pin 15/16 (e.g. display EDID) */
-	i2c_ddc: i2c@7000c400 {
+	i2c@7000c400 {
 		status = "okay";
 	};