Remove waypoint path from map when entering autonomous mode

Resets the selected rover's waypoint path in the map when the rover is
put into autonomous mode.

Author: wfvining

src/rqt_rover_gui/src/MapData.cpp

@@ -422,6 +422,7 @@ void MapData::setAutonomousMode(string rover_name)
 {
    update_mutex.lock();
    rover_mode[rover_name] = 1;
+   resetWaypointPathForSelectedRover(rover_name);
    update_mutex.unlock();
 }