message: Remove literals for caf::duration
  CAF's own duration type is going to get deprecated soon. No need to add
  new functionality.
diff: @@ -172,29 +172,6 @@ operator+=(std::chrono::time_point<Clock, Duration>& lhs, const duration& rhs) {
  return lhs;
  }
  -namespace literals {
  -
  -constexpr duration operator"" _min(unsigned long long x) {
  - return {time_unit::minutes, static_cast<uint32_t>(x)};
  -}
  -
  -constexpr duration operator"" _s(unsigned long long x) {
  - return {time_unit::seconds, static_cast<uint32_t>(x)};
  -}
  -constexpr duration operator"" _ms(unsigned long long x) {
  - return {time_unit::milliseconds, static_cast<uint32_t>(x)};
  -}
  -
  -constexpr duration operator"" _us(unsigned long long x) {
  - return {time_unit::microseconds, static_cast<uint32_t>(x)};
  -}
  -
  -constexpr duration operator"" _ns(unsigned long long x) {
  - return {time_unit::nanoseconds, static_cast<uint32_t>(x)};
  -}
  -
  -} // namespace literals
  -
  } // namespace caf
  #endif // CAF_DURATION_HPP
  