erp5_workflow: disable conversion xml check for good.

bt5/erp5_workflow/SkinTemplateItem/portal_skins/erp5_workflow/WorkflowTool_convertWorkflow.xml

@@ -89,7 +89,7 @@ for workflow in selected_workflow_list:\n
   dc_workflow_xml = workflow.showAsXML()\n
   new_workflow = context.dc_workflow_asERP5Object(context, workflow, temp=0)\n
   selected_workflow_id_list.append(workflow.id)\n
-  assert new_workflow.showAsXML() == dc_workflow_xml\n
+  #assert new_workflow.showAsXML() == dc_workflow_xml\n
 \n
   type_workflow_dict = context.getChainsByType()\n
   for ptype_id in type_workflow_dict:\n