Remove updated section.

index.html

@@ -1605,43 +1605,6 @@ <h2>
 </pre>
     </section>
 
-    <section>
-      <h2>
-Updated (Optional)
-      </h2>
-
-      <p>
-Standard metadata for identifier records includes a timestamp of the
-most recent change. The rules for including an updated timestamp are:
-      </p>
-
-      <ol start="1">
-        <li>
-A DID Document MUST have zero or one property representing an
-updated timestamp. It is RECOMMENDED to include this property.
-        </li>
-
-        <li>
-The key for this property MUST be updated.
-        </li>
-
-        <li>
-The value of this key MUST follow the formatting rules (3, 4, 5)
-from Section <a href="#created-optional"></a>.
-        </li>
-      </ol>
-
-      <p>
-Example:
-      </p>
-
-      <pre class="example nohighlight">
-{
-  "updated": "2016-10-17T02:41:00Z"
-}
-</pre>
-    </section>
-
     <section>
       <h2>
 Proof (Optional)