[FIX][REF] website_quote: remove broken call to an old onchange

website_quote still calls sale_order_line.product_id_change() in old API,
giving arguments that are not supported anymore. It does not crash because
'reasons'. However the new onchange does not return values since v9. The
call is therefore not necessary anymore and the computation has been adapted
accordingly.

addons/website_quote/models/order.py

@@ -205,25 +205,13 @@ class sale_order(osv.osv):
         lines = [(5,)]
         quote_template = self.pool.get('sale.quote.template').browse(cr, uid, template_id, context=context)
         for line in quote_template.quote_line:
-            res = self.pool.get('sale.order.line').product_id_change(cr, uid, False,
-                False, line.product_id.id, line.product_uom_qty, line.product_uom_id.id, line.product_uom_qty,
-                line.product_uom_id.id, line.name, partner, False, True, time.strftime('%Y-%m-%d'),
-                False, fiscal_position_id, True, context)
-            data = res.get('value', {})
             if pricelist_id:
-                uom_context = context.copy()
-                uom_context['uom'] = line.product_uom_id.id
+                uom_context = dict(context, uom=line.product_uom_id.id)
                 price = pricelist_obj.get_product_price(cr, uid, [pricelist_id], line.product_id, 1, False, context=uom_context)
             else:
                 price = line.price_unit
 
-            if 'tax_id' in data:
-                data['tax_id'] = [(6, 0, data['tax_id'])]
-            else:
-                fpos = (fiscal_position_id and self.pool['account.fiscal.position'].browse(cr, uid, fiscal_position_id)) or False
-                taxes = fpos.map_tax(line.product_id.product_tmpl_id.taxes_id).ids if fpos else line.product_id.product_tmpl_id.taxes_id.ids
-                data['tax_id'] = [(6, 0, taxes)]
-            data.update({
+            data = {
                 'name': line.name,
                 'price_unit': price,
                 'discount': line.discount,
@@ -234,8 +222,17 @@ class sale_order(osv.osv):
                 'website_description': line.website_description,
                 'state': 'draft',
                 'customer_lead': self._get_customer_lead(cr, uid, line.product_id.product_tmpl_id),
-            })
+            }
+
+            if fiscal_position_id:
+                fpos = self.pool['account.fiscal.position'].browse(cr, uid, fiscal_position_id)
+                taxes = fpos.map_tax(line.product_id.product_tmpl_id.taxes_id).ids
+            else:
+                taxes = line.product_id.product_tmpl_id.taxes_id.ids
+            data['tax_id'] = [(6, 0, taxes)]
+
             lines.append((0, 0, data))
+
         options = []
         for option in quote_template.options:
             if pricelist_id: