remove temporary banner announcing April releases (#1678)

Author: Trott

layouts/index.hbs

@@ -12,13 +12,6 @@
 
         {{{ contents }}}
 
-        {{!-- Just a temporary announcement. Regular banner stays intact in case of important security release --}}
-        <p class="home-version home-version-banner">
-          <a href="https://medium.com/@nodejs/april-2018-release-updates-from-the-node-js-project-71687e1f7742">
-            Node 4.x is End Of Life – April Release Updates
-          </a>
-        </p>
-
         {{#if project.banner.visible}}
           <p class="home-version home-version-banner">
             <a href="{{ project.banner.link }}">{{#if project.banner.text}}{{{ project.banner.text }}}{{else}}{{{ labels.banner }}}{{/if}}</a>