Remove obsolete comment in UnorderedEquals vector matcher

include/internal/catch_matchers_vector.h

@@ -131,8 +131,6 @@ namespace Matchers {
         struct UnorderedEqualsMatcher : MatcherBase<std::vector<T, AllocMatch>> {
             UnorderedEqualsMatcher(std::vector<T, AllocComp> const& target) : m_target(target) {}
             bool match(std::vector<T, AllocMatch> const& vec) const override {
-                // Note: This is a reimplementation of std::is_permutation,
-                //       because I don't want to include <algorithm> inside the common path
                 if (m_target.size() != vec.size()) {
                     return false;
                 }