delegate: drop useless scope

src/entt/signal/delegate.hpp

@@ -35,7 +35,7 @@ template<typename Class, typename Type, typename... Other>
 constexpr auto function_pointer(Type Class::*, Other &&...) -> Type (*)();
 
 template<typename... Type>
-using function_pointer_t = decltype(internal::function_pointer(std::declval<Type>()...));
+using function_pointer_t = decltype(function_pointer(std::declval<Type>()...));
 
 template<typename... Class, typename Ret, typename... Args>
 [[nodiscard]] constexpr auto index_sequence_for(Ret (*)(Args...)) {