media: atomisp: remove atomisp_is_acc_enabled()

atomisp_is_acc_enabled() always returns false now, remove it.

Link: https://lore.kernel.org/linux-media/20220615205037.16549-24-hdegoede@redhat.com


Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>