Is make_ordered_pair and make_unordered_pair needed?

[JoeLoser]

Are the function templates make_ordered_pair and make_unordered_pair needed? See

graph/include/graph/ordered_pair.hpp

Line 104 in a984812

constexpr auto make_ordered_pair(T1&& v1, T2&& v2);

and

graph/include/graph/ordered_pair.hpp

Line 197 in a984812

constexpr auto make_unordered_pair(T1&& v1, T2&& v2);

Specifically, deduction guides should alleviate the need for these function templates.