ARM: dts: Remove redundant pinctrl settings in exynos4412-odroid

The pinctrl settings in i2c_0 and i2c_1 are already provided
through the exynos4 dtsi.

Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>