Fix imports in rest api module
use actix_cors::Cors;
-use actix_web::{
- middleware,
- web::{self},
- App, HttpResponse, HttpServer,
-};
+use actix_web::{middleware, web, App, HttpResponse, HttpServer};
use futures::channel::mpsc;
use std::net::SocketAddr;
use zksync_config::ConfigurationOptions;
