leds: turris-omnia: 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 <javier.carrasco.cruz@gmail.com>
Link: https://lore.kernel.org/r/20240927-leds_unused_leds_h-v1-6-46fbf41ed4ae@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>

Author: javiercarrascocruz

drivers/leds/leds-turris-omnia.c

@@ -10,7 +10,6 @@
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/of.h>
-#include "leds.h"
 
 #define OMNIA_BOARD_LEDS	12
 #define OMNIA_LED_NUM_CHANNELS	3