Unlist PageCDN embed links from documentation

Author: jgonggrijp

index.html

@@ -667,12 +667,6 @@ <h2>v1.13.8 CDN URLs <i style="padding-left: 12px; font-size:12px;">(Use with <t
       <li>
         <tt>https://unpkg.com/underscore@1.13.8/underscore-esm-min.js</tt>
       </li>
-      <li>
-        <tt>https://pagecdn.io/lib/underscore/1.13.8/underscore-umd-min.js</tt>
-      </li>
-      <li>
-        <tt>https://pagecdn.io/lib/underscore/1.13.8/underscore-esm-min.js</tt>
-      </li>
       <li>
         <tt>https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.13.8/underscore-umd-min.js</tt>
       </li>