removeRouter(url) {
        this.app._router.stack.forEach( (route, i, routes) => {
            if (route.regexp.toString() === `/^\\/${url}\\/?(?=\\/|$)/i` ) {
                routes.splice(i, 1)
            }
        })
    }
Remove an ExpressJS router from the stack
@param {string} url The url of the router to remove