Remove idef-ed out overload of get_c_array

include/boost/array.hpp

@@ -390,24 +390,6 @@ namespace boost {
         return arg.elems;
     }
 
-#if 0
-    // Overload for std::array, assuming that std::array will have
-    // explicit conversion functions as discussed at the WG21 meeting
-    // in Summit, March 2009.
-    template <typename T, std::size_t N>
-    T(&get_c_array(std::array<T,N>& arg))[N]
-    {
-        return static_cast<T(&)[N]>(arg);
-    }
-
-    // Const version.
-    template <typename T, std::size_t N>
-    const T(&get_c_array(const std::array<T,N>& arg))[N]
-    {
-        return static_cast<T(&)[N]>(arg);
-    }
-#endif
-
     template <class It> std::size_t hash_range(It, It);
 
     template<class T, std::size_t N>