Integrate P0776R1's deletion of Exception reporting behavior section

Author: jaredhoberock

exceptions.html

@@ -1,7 +1,8 @@
 <cxx-clause id="parallel.exceptions">
   <h1>Parallel exceptions</h1>
     <cxx-section id="parallel.exceptions.behavior">
-      <h1>Exception reporting behavior</h1>
+      <h1><del>Exception reporting behavior</del></h1>
+        <del>
         <p>
           During the execution of a standard parallel algorithm, 
           if temporary memory resources are required and none are available,
@@ -49,6 +50,7 @@ <h1>Exception reporting behavior</h1>
             </li>
           </ul>
         </p>
+        </del>
     </cxx-section>
     <cxx-section id="parallel.exceptions.synopsis">
       <h1>Header <code>&lt;experimental/exception_list&gt;</code> synopsis</h1>