media: ov2640: Drop legacy includes

The driver was including legacy headers despite using just
<linux/gpio/consumer.h>. Drop the surplus includes.

Cc: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>

drivers/media/i2c/ov2640.c

@@ -16,9 +16,7 @@
 #include <linux/clk.h>
 #include <linux/slab.h>
 #include <linux/delay.h>
-#include <linux/gpio.h>
 #include <linux/gpio/consumer.h>
-#include <linux/of_gpio.h>
 #include <linux/v4l2-mediabus.h>
 #include <linux/videodev2.h>