ARM: dts: apq8064: remove redundant i2c pinctrl properties

This patch removes i2c pinctrl properties from board which which are now
mentioned in the SOC specific file. This will avoid redundant properties
across multiple board fiiles.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>