code: public void removePoi(Poi BLIP) {
          if (pois.keySet().contains(BLIP.getName())) {
              pois.remove(BLIP.getName());
              checkForBlips();
          }
      }
docs: Removes a point of interest from the radar
  Keep in mind that only the poi's are visible as blips that are
  in the range of the radar.
  @param BLIP