Remove redlining from [parallel.exceptions.synopsis]

Author: jaredhoberock

exceptions.html

@@ -4,33 +4,26 @@ <h1>Parallel exceptions</h1>
       <h1>Header <code>&lt;experimental/exception_list&gt;</code> synopsis</h1>
       <pre>
 
-<del>namespace std {</del>
-namespace <ins>std::</ins>experimental {
-<ins>inline </ins>namespace parallel<ins>ism_v2</ins> {
-<del>inline namespace v2 {</del>
+namespace std::experimental {
+inline namespace parallelism_v2 {
 
   class exception_list : public exception
   {
     public:
-      <del>typedef <em>unspecified</em> iterator;</del>
-      <ins>using iterator = <em>unspecified</em>;</ins>
+      using iterator = <em>unspecified</em>;
 
       size_t size() const noexcept;
       iterator begin() const noexcept;
       iterator end() const noexcept;
 
       const char* what() const noexcept override;
   };
-<del>}</del>
 }
 }
-<del>}</del>
       </pre>
 
       <p>
-        The class <code>exception_list</code> owns a sequence of <code>exception_ptr</code> objects.<del> The parallel
-        algorithms may use the <code>exception_list</code> to communicate uncaught exceptions encountered during parallel execution to the
-        caller of the algorithm.</del>
+        The class <code>exception_list</code> owns a sequence of <code>exception_ptr</code> objects.
       </p>
 
       <p>