Collision Monitor fixups (ros-navigation#3696)

* Fix max_points -> min_points in parameters
* Move robot_utils.hpp include to source where it actually using
* Remove double-description of getTransform()

Author: AlexeyMerzlyakov

nav2_collision_monitor/include/nav2_collision_monitor/collision_monitor_node.hpp

@@ -28,7 +28,6 @@
 #include "tf2_ros/transform_listener.h"
 
 #include "nav2_util/lifecycle_node.hpp"
-#include "nav2_util/robot_utils.hpp"
 #include "nav2_msgs/msg/collision_monitor_state.hpp"
 
 #include "nav2_collision_monitor/types.hpp"