drm/exynos: Remove duplicate inclusion of i2c.h

i2c.h was included twice.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

drivers/gpu/drm/exynos/exynos_hdmi.c

@@ -34,7 +34,6 @@
 #include <linux/io.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
-#include <linux/i2c.h>
 #include <linux/of_gpio.h>
 #include <linux/hdmi.h>
 #include <linux/component.h>