`ranges_swap_ranges.h` includes `<type_traits>` but does not use anything from it. So, remove the include. Differential Revision: https://reviews.llvm.org/D119491
Implement `std::ranges::swap_ranges()` Reviewed By: Quuxplusone, #libc, ldionne Spies: ldionne, mgorny, jloser, libcxx-commits Differential Revision: https://reviews.llvm.org/D116303