removing reference to pro

Author: Eduardo Fullea

index.html

@@ -1640,7 +1640,7 @@ <h2><a>DeliveryReport</a> Interface</h2>
   <h2><a>MessagingEvent</a> Interface</h2>
   <p>The <a>MessagingEvent</a> interface represents events related to a message
   sent or received.
-  <dl title="interface MessagingEvent : ProgressEvent"
+  <dl title="interface MessagingEvent"
       class="idl">
     <dt>readonly attribute (SmsMessage or MmsMessage) message</dt>
     <dd>MUST return the <code>SmsMessage</code> or <code>MmsMessage</code>