leds: pwm: Remove unused local leds.h

Commit 156a5bb8 ("leds: Move led_init_default_state_get() to the
global header") moved the only element leds-gpio required from the local
leds.h to its global counterpart. Drop the inclusion of the local leds.h
as it is no longer used.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://lore.kernel.org/r/20240927-leds_unused_leds_h-v1-5-46fbf41ed4ae@gmail.com


Signed-off-by: Lee Jones <lee@kernel.org>