PR review suggestion 4

Co-authored-by: William Woodall <william+github@osrfoundation.org>

rclcpp/include/rclcpp/qos.hpp

@@ -123,9 +123,7 @@ class RCLCPP_PUBLIC QoS
 
   /// Conversion constructor to ease construction in the common case of just specifying depth.
   /**
-   * This is a convenience constructor that calls
-   * QoS(const QoSInitialization&, const rmw_qos_profile_t &) with the first argument set
-   * to KeepLast(history_depth) and the second argument equal to the default.
+   * This is a convenience constructor that calls QoS(KeepLast(history_depth)).
    *
    * \param[in] history_depth How many messages can be queued when publishing
    *   with a Publisher, or how many messages can be queued before being replaced