[func.wrap.func] Remove declarations already in [functional.syn]

Author: JohelEGP

source/utilities.tex

@@ -15090,14 +15090,6 @@
     function(R(*)(ArgTypes...)) -> function<R(ArgTypes...)>;
 
   template<class F> function(F) -> function<@\seebelow@>;
-
-  // \ref{func.wrap.func.nullptr}, null pointer comparison operator functions
-  template<class R, class... ArgTypes>
-    bool operator==(const function<R(ArgTypes...)>&, nullptr_t) noexcept;
-
-  // \ref{func.wrap.func.alg}, specialized algorithms
-  template<class R, class... ArgTypes>
-    void swap(function<R(ArgTypes...)>&, function<R(ArgTypes...)>&) noexcept;
 }
 \end{codeblock}