Always use the shipment address of the sale as delivery address for the shipment

The warehouse on the sale is not always filled instead it is the the warehouse
of the shipment that must be used for the comparison. But this makes the test
useless as the shipment address is always used ad delivery address.

Closes #14954
(grafted from d414eccc0ad58a86ba4083f5c5f427b4e41edee7)

--HG--
branch : 8.0

modules/sale/sale.py

@@ -1049,10 +1049,7 @@ class Sale(
         shipment = Shipment(**values)
         shipment.on_change_warehouse()
         if Shipment.__name__ == 'stock.shipment.out':
-            if self.shipment_address == self.warehouse.address:
-                shipment.delivery_address = shipment.warehouse.address
-            else:
-                shipment.delivery_address = self.shipment_address
+            shipment.delivery_address = self.shipment_address
         elif Shipment.__name__ == 'stock.shipment.out.return':
             shipment.contact_address = values['customer'].address_get()
         return shipment