When using the widget res_partner_many2one (e.g. in the customer invoice form view), the VAT number disappears when being in 'edit' mode. This is caused by the '_getDisplayNameWithoutVAT' function, which was introduced in PR https://github.com/odoo/odoo/pull/29189, because the VAT appeared in edit mode but disappeared when saved at that time. Since the VAT no longer disappears when saved, we no longer need this function removing the VAT from the edit mode. task-2749331 closes odoo/odoo#87843 X-original-commit: 78a5e53a99d9f0f04edf42f1ed8d713fda4de36e Signed-off-by: Laurent Smet <las@odoo.com> Signed-off-by: Julien Van Roy <juvr@odoo.com>