drm/nouveau/Kconfig: Drop duplicate "select ACPI_VIDEO"

Before this change nouveau's Kconfig section had 2 "select ACPI_VIDEO"
statements:

select ACPI_VIDEO if ACPI && X86 && BACKLIGHT_CLASS_DEVICE && INPUT
select ACPI_VIDEO if ACPI && X86

Drop the one with the extra conditions, if the conditions for that
one are true then the second statement will always select ACPI_VIDEO
already.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220620094627.9730-1-hdegoede@redhat.com