[FIX] Conflict with stock_request onchange method

The onchange method in the stock_request module is no longer needed so this overrides that to do nothing.

stock_request_direction/models/stock_request_order.py

@@ -26,6 +26,11 @@ class StockRequestOrder(models.Model):
             if stock_request.route_id:
                 stock_request.route_id = False
 
+    @api.onchange('warehouse_id')
+    def onchange_warehouse_id(self):
+        # Onchange no longer needed
+        pass
+
     def change_childs(self):
         super().change_childs()
         if not self._context.get("no_change_childs", False):