Clean up definition of Atomics.waitAsync task source

source

@@ -89480,15 +89480,13 @@ dictionary <dfn>PromiseRejectionEventInit</dfn> : <span>EventInit</span> {
   <ol>
    <li><p>Let <var>agent</var> be the <span>agent</span> corresponding to <var>agentSignifier</var>.</p></li>
    <li>
-    <p><span>Queue a task</span> on the <span>Atomics.waitAsync task source</span> in <var>agent</var>'s <span>event loop</span> to run the following steps:</p>
+    <p><span>Queue a task</span> on the <dfn>Atomics.waitAsync task source</dfn> in <var>agent</var>'s <span>event loop</span> to run the following steps:</p>
     <ol>
      <li>Perform ! <span>Call</span>(<var>promiseCapability</var>.[[Resolve]], undefined, &laquo; <var>resolution</var> &raquo;).</li>
     </ol>
    </li>
   </ol>
 
-  <p>The <span>task source</span> for these <span data-x="concept-task">tasks</span> in this section is the <dfn>Atomics.waitAsync task source</dfn>.</p>
-
   </div>
 
   <h4>Event loops</h4> <!-- <dfn>event loop</dfn> -->