[IMP] point_of_sale: customer display computation
[IMP] point_of_sale: customer display computation

Since the POS customer display is not anymore a stored field, we don't
need to keep this override of write and create.

closes odoo/odoo#35638

Signed-off-by: pimodoo <16075eed7f0f1db85d54c35d23e6589f4efb5038@users.noreply.github.com>
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo