Delete 404.html car inutile

layouts/404.html

-{{ define "header" }}<!-- No header on 404 pages -->{{ end }}
-{{ define "main" }}
-  <div role="main" class="container main-content">
-    <div class="text-center">
-      <h1 class="error-emoji"></h1>
-      <p class="error-text">{{ i18n "pageNotFound" }}</p>
-      <h3>You should go to the <a href="{{ "" | absURL }}">home page</a></h3>
-    </div>
-  </div>
-<script>
-  var errorEmojiContainer = document.getElementsByClassName('error-emoji')[0];
-  var emojiArray = [
-    '\\(o_o)/', '(o^^)o', '(˚Δ˚)b', '(^-^*)', '(≥o≤)', '(^_^)b', '(·_·)',
-    '(=\'X\'=)', '(>_<)', '(;-;)', '\\(^Д^)/',
-  ];
-  var errorEmoji = emojiArray[Math.floor(Math.random() * emojiArray.length)];
-  errorEmojiContainer.appendChild(document.createTextNode(errorEmoji));
-</script>
-{{ end }}