Remove dead link (#437)

Author: rtucek

README.md

@@ -15,7 +15,6 @@ Easy i18n localization for Laravel, an useful tool to combine with Laravel local
     - <a href="#laravel">Laravel</a>
 - <a href="#usage">Usage</a>
     - <a href="#middleware">Middleware</a>
-    - <a href="#sessions">Sessions</a>
 - <a href="#helpers">Helpers</a>
 - <a href="#translated-routes">Translated Routes</a>
 - <a href="#config">Config</a>