Remove ie.js

Was needed for IE8

app/assets/javascripts/ie.js

-// @license magnet:?xt=urn:btih:0b31508aeb0634b347b8270c7bee4d411b5d4109&dn=agpl-3.0.txt AGPL-v3-or-Later
-
-document.createElement('header');
-document.createElement('footer');
-// @license-end
-

app/views/layouts/application.html.haml

@@ -10,10 +10,6 @@
     - content_for :javascript do
       = old_browser_js_support
 
-      <!--[if IE]>
-      = javascript_include_tag :ie
-      <![endif]-->
-
       = javascript_include_tag :main, :templates
       = load_javascript_locales
 

config/application.rb

@@ -74,7 +74,6 @@ module Diaspora
     # (application.js, application.css, and all non-JS/CSS in the app/assets are already added)
     config.assets.precompile += %w[
       contact-list.js
-      ie.js
       jquery3.js
       jquery_ujs.js
       main.js