mark boost's tracking bug as fixed

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112183 91177308-0d34-0410-b5e6-96231b3b80d8

www/cxx_status.html

@@ -70,7 +70,7 @@
     <td><a href="http://blog.llvm.org/2010/05/clang-builds-boost.html">Compiles
         and passes regression tests</a> on Darwin/X86-64.</td>
     <td>May 20, 2010</td>
-    <td><a href="http://llvm.org/bugs/show_bug.cgi?id=6023">PR6023</a></td>
+    <td><a href="http://llvm.org/bugs/show_bug.cgi?id=6023"><del>PR6023</del></a></td>
   </tr>
   <tr>
     <td><a href="http://qt.nokia.com">Qt</a></td>