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

[SVN r46930]

include/boost/exception/exception.hpp

@@ -47,13 +47,6 @@ boost
         {
         public:
 
-        virtual
-        char const *
-        what() const throw()
-            {
-            return diagnostic_information();
-            }
-
         virtual
         char const *
         diagnostic_information() const throw()