LWG3870 Remove voidify

Fixes NB GB 121 (C++23 CD).

Author: burblebee

source/algorithms.tex

@@ -10781,7 +10781,7 @@
 \begin{codeblock}
 template<class T>
   constexpr void* @\placeholdernc{voidify}@(T& obj) noexcept {
-    return const_cast<void*>(static_cast<const volatile void*>(addressof(obj)));
+    return addressof(obj);
   }
 \end{codeblock}