message: Removed named_actor_configs from actor_system
  The member in `actor_system` is unused and redundant with the same
  member in `actor_system_config`.
diff: #include "caf/abstract_actor.hpp"
  #include "caf/actor_registry.hpp"
  #include "caf/string_algorithms.hpp"
  -#include "caf/named_actor_config.hpp"
  #include "caf/scoped_execution_unit.hpp"
  #include "caf/uniform_type_info_map.hpp"
  #include "caf/composable_behavior_based_actor.hpp"
  @@ -193,9 +192,6 @@ public:
  using module_array = std::array<module_ptr, module::num_ids>;
  - using named_actor_config_map = std::unordered_map<std::string,
  - named_actor_config>;
  -
  /// @warning The system stores a reference to `cfg`, which means the
  /// config object must outlive the actor system.
  explicit actor_system(actor_system_config& cfg);
  @@ -490,11 +486,6 @@ public:
  return cfg_;
  }
  - /// Returns configuration parameters for individual named actors types.
  - inline const named_actor_config_map& named_actor_configs() const {
  - return named_actor_configs_;
  - }
  -
  /// @cond PRIVATE
  /// Increases running-detached-threads-count by one.
  @@ -576,7 +567,6 @@ private:
  std::mutex logger_dtor_mtx_;
  std::condition_variable logger_dtor_cv_;
  volatile bool logger_dtor_done_;
  - named_actor_config_map named_actor_configs_;
  };
  } // namespace caf
  