net: appletalk: remove cops support

The COPS Appletalk support is very old, never said to actually work
properly, and the firmware code for the devices are under a very suspect
license.  Remove it all to clear up the license issue, if it is still
needed and actually used by anyone, we can add it back later once the
license is cleared up.

Reported-by: Prarit Bhargava <prarit@redhat.com>
Cc: jschlst@samba.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Christoph Hellwig <hch@lst.de>
Acked-by: Prarit Bhargava <prarit@redhat.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20230927090029.44704-2-gregkh@linuxfoundation.org


Signed-off-by: Jakub Kicinski <kuba@kernel.org>