<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def config_delete(args):
 """ Remove a method config from a workspace """

    r = fapi.delete_workspace_config(args.project, args.workspace,
                                        args.namespace, args.config)
    fapi._check_response_code(r, [200,204])
    return r.text if r.text else None