Revert "[FIX] delivery: picking weight not updated sometime"

This commit is not needed (and not wanted) in saas~12.1 due to
07bef887af that convert field
`move_ids_without_package` to a computed field with an invert method.

The invert method writes on `move_lines`, which will recompute the value
of `weight` field correctly.

This reverts commit b2b395467f.

addons/delivery/models/stock_picking.py

@@ -111,7 +111,7 @@ class StockPicking(models.Model):
         for picking in self:
             picking.carrier_tracking_url = picking.carrier_id.get_tracking_link(picking) if picking.carrier_id and picking.carrier_tracking_ref else False
 
-    @api.depends('move_lines', 'move_ids_without_package')
+    @api.depends('move_lines')
     def _cal_weight(self):
         for picking in self:
             picking.weight = sum(move.weight for move in picking.move_lines if move.state != 'cancel')