gpio: tps65218: remove unused #include

Just as it says: after adding the proper interfaces to gpiolib,
this is no longer needed.
Suggested-by: NNicolas Saenz Julienne <nicolassaenzj@gmail.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-tps65218.c

@@ -17,7 +17,6 @@
 #include <linux/gpio/driver.h>
 #include <linux/platform_device.h>
 #include <linux/mfd/tps65218.h>
-#include "gpiolib.h"
 
 struct tps65218_gpio {
 	struct tps65218 *tps65218;