leds: multicolor: Remove unused local leds.h

This driver does not require any element from the local leds.h. Drop
unused header.

Signed-off-by: Javier Carrasco <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Lee Jones <[e-mail]>

drivers/leds/led-class-multicolor.c

···
 #include <linux/slab.h>
 #include <linux/uaccess.h>
 
-#include "leds.h"
-
 int led_mc_calc_color_components(struct led_classdev_mc *mcled_cdev,
 				 enum led_brightness brightness)
 {