nginx 301 redirect to no-www

server {
        listen 80;
        server_name www.ruslango.ru;
        rewrite ^ http://ruslango.ru$request_uri? permanent;
        }

server {
        listen 80;
        server_name ruslango.ru;
        root /home/www/ruslango.ru;
        index index.php;

        location / {
                try_files $uri $uri/ /index.php?q=$uri&$args;
        }