Remove defunct reference to sessions styles

Author: dcollie2

app/views/layouts/sessions.html.erb

@@ -10,7 +10,6 @@
     <%= csrf_meta_tags %>
     <%= csp_meta_tag %>
 
-    <%= stylesheet_link_tag 'sessions', media: 'all', 'data-turbolinks-track': 'reload' %>
     <link rel="icon" href="/icon.png" type="image/png">
     <link rel="icon" href="/icon.svg" type="image/svg+xml">
     <link rel="apple-touch-icon" href="/icon.png">