message: is_nothrow_destructible<incomplete> is ill-formed NDR
diff: @@ -78,8 +78,6 @@ struct IntSwappable
  friend void swap(IntSwappable, IntSwappable);
  };
  -struct incomplete;
  -
  static_assert(ranges::Destructible<int>(), "");
  static_assert(ranges::Destructible<const int>(), "");
  static_assert(!ranges::Destructible<void>(), "");
  @@ -94,7 +92,6 @@ static_assert(ranges::Destructible<int(&)[2]>(), "");
  static_assert(ranges::Destructible<moveonly>(), "");
  static_assert(ranges::Destructible<nonmovable>(), "");
  static_assert(!ranges::Destructible<NotDestructible>(), "");
  -static_assert(!ranges::Destructible<incomplete>(), "");
  static_assert(ranges::Constructible<int>(), "");
  static_assert(ranges::Constructible<int const>(), "");
  