message: Remove unused state from stream<T>
diff: @@ -45,17 +45,7 @@ public:
  /// Convenience constructor for returning the result of `self->new_stream`
  /// and similar functions.
  - explicit stream(stream_slot id = 0, stream_manager_ptr sptr = nullptr)
  - : slot_(id),
  - ptr_(std::move(sptr)) {
  - // nop
  - }
  -
  - /// Convenience constructor for returning the result of `self->new_stream`
  - /// and similar functions.
  - stream(stream other, stream_manager_ptr sptr)
  - : slot_(std::move(other.slot_)),
  - ptr_(std::move(sptr)) {
  + explicit stream(stream_slot id = 0) : slot_(id) {
  // nop
  }
  @@ -66,16 +56,6 @@ public:
  return slot_;
  }
  - /// Returns the handler assigned to this stream on this actor.
  - inline stream_manager_ptr& ptr() noexcept {
  - return ptr_;
  - }
  -
  - /// Returns the handler assigned to this stream on this actor.
  - inline const stream_manager_ptr& ptr() const noexcept {
  - return ptr_;
  - }
  -
  // -- serialization support --------------------------------------------------
  template <class Inspector>
  @@ -87,7 +67,6 @@ private:
  // -- member variables -------------------------------------------------------
  stream_slot slot_;
  - stream_manager_ptr ptr_;
  };
  } // namespace caf
  