Remove unnecessary `type`

_includes/head.html

@@ -14,7 +14,7 @@
     <link rel="canonical" href="{{ page.url | replace:'index.html', '' | absolute_url }}">
   {% endif %}
 
-  <script type="text/javascript">
+  <script>
     /* Cut the mustard */
     if ( 'querySelector' in document && 'addEventListener' in window ) {
       document.documentElement.className = document.documentElement.className.replace(/\bno-js\b/g, '') + 'js';
@@ -32,4 +32,4 @@
     {% endcomment %}
     {% include head-feed.html %}
   {% endif %}
-</head>
+</head>