Https to http redirect with .htaccess
If you are unable to renew SSL for your website after expiry then this tutorial is most usefull for you because search engines will take time to change https:// to https:// so it is better to keep a redirect in .htaccess
1. Login into your FTP or Cpanel.
2. In that you will find a file named as .htaccess inside public_html
3. Right click and select edit now and add the below code to the file
RewriteEngine OnRewriteCond %{HTTPS} onRewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
4. After adding the above code to your .htaccess file please save it.
After completion of adding code when some one vists your site with https:// then they will be automatically redirected to https:// with out SSL site.