Dr. David Alan Gilbert 5461f3fd74 backlight: Remove notifier ...

backlight_register_notifier and backlight_unregister_notifier have
been unused since commit 6cb634d0dc ("ACPI: video: Remove code to
unregister acpi_video backlight when a native backlight registers")

With those not being called, it means that the backlight_notifier
list is always empty.

Remove the functions, the list itself and the enum used in the
notifications.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Reviewed-by: Simona Vetter <simona.vetter@ffwll.ch>
Link: https://lore.kernel.org/r/20240919232758.639925-1-linux@treblig.org
Signed-off-by: Lee Jones <lee@kernel.org>

2024-10-09 15:42:48 +01:00

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