message: elle.Duration: remove memo specific code
diff: @@ -79,25 +79,6 @@ namespace elle
  std::ostream&
  operator << (std::ostream& s, const DurationOpt& opt);
  - template <typename Serializer, typename Duration>
  - void
  - serialize_duration_ms(Serializer& s, std::string const& name, Duration& d)
  - {
  - using milliseconds = std::chrono::milliseconds;
  - if (s.out())
  - {
  - int ms = std::chrono::duration_cast<milliseconds>(d).count();
  - s.serialize(name + "_ms", ms);
  - }
  - else
  - {
  - int ms;
  - s.serialize(name + "_ms", ms);
  - d = milliseconds(ms);
  - }
  - };
  -
  -
  #if 0
  namespace serialization
  {
  