media: atomisp: remove dynamic and reserved pool code

There are no callers of this code atm; and looking at the atomisp
memory-management code if anything we want to make it simpler and
not re-introduce use of these pools, so remove the pool code.

Link: https://lore.kernel.org/linux-media/20220615205037.16549-11-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>