Removed boost::exception::what, to avoid ambiguity in user types deriving from both std::exception and boost::exception.

[SVN r46930]

doc/exception_diagnostic_information.html

@@ -30,7 +30,6 @@
 </div><h3>See also:</h3>
 <div class="RenoPageList"><a href="diagnostic_information.html">diagnostic_information<br/>
 </a><a href="exception.html">exception<br/>
-</a><a href="exception_what.html">exception::what<br/>
 </a><a href="tutorial_diagnostic_information.html">Tutorial: Diagnostic Information<br/>
 </a></div>
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