Update application.html.erb

Author: acdha

app/views/layouts/application.html.erb

@@ -24,7 +24,6 @@
   <link rel="shortcut icon" href="<%= current_project.favicon %>">
 <% end %>
 
-<script src="https://cdn.polyfill.io/v1/polyfill.min.js?features=default,es6,Promise,fetch&amp;flags=gated"></script>
 <%= javascript_include_tag "application" %>
 <script src='/js/custom.js' charset="utf-8"></script>