gpiolib: of: remove obsolete comment for of_gpio_get_count()

The function is only being called form the main gpiolib module, so
remove comment saying that it is also used by external callers.

Signed-off-by: Dmitry Torokhov <[e-mail]>
Reviewed-by: Andy Shevchenko <[e-mail]>
Signed-off-by: Bartosz Golaszewski <[e-mail]>

drivers/gpio/gpiolib-of.c

···
 	return of_gpio_named_count(np, "gpios");
 }
 
-/*
- * This is used by external users of of_gpio_count() from <linux/of_gpio.h>
- *
- * FIXME: get rid of those external users by converting them to GPIO
- * descriptors and let them all use gpiod_count()
- */
 int of_gpio_get_count(struct device *dev, const char *con_id)
 {
 	int ret;