[FIX] sale, purchase: fix payment_term_id default value

Issue

	- Install Sale and/or Purchase
	- Create new order
	- Debugger > Set Defaults
	- Set default value for payment terms
	- Quit and re-create

	Default value is not filled

Cause

	The default value is set but it's overridden
	by a onchange

Solution

	Remove the override who puts the value to False

OPW-2197940

closes odoo/odoo#45776

X-original-commit: 4d03e6dd81fab2aa12e3205106fd59758c6c90f6
Signed-off-by: Jason Van Malder (jvm) <jvm@odoo.com>

addons/purchase/models/purchase.py

@@ -207,7 +207,6 @@ class PurchaseOrder(models.Model):
         self = self.with_company(self.company_id)
         if not self.partner_id:
             self.fiscal_position_id = False
-            self.payment_term_id = False
             self.currency_id = self.env.company.currency_id.id
         else:
             self.fiscal_position_id = self.env['account.fiscal.position'].get_fiscal_position(self.partner_id.id)

addons/sale/models/sale.py

@@ -342,7 +342,6 @@ class SaleOrder(models.Model):
             self.update({
                 'partner_invoice_id': False,
                 'partner_shipping_id': False,
-                'payment_term_id': False,
                 'fiscal_position_id': False,
             })
             return