code: public void removeTiles(String version, BoundingBox boundingBox, OnOfflineTilesRemovedCallback callback) {
      offlineNavigator.removeTiles(new File(tilePath, version).getAbsolutePath(), boundingBox.southwest(),
        boundingBox.northeast(), callback);
    }
docs: Removes tiles within / intersected by a bounding box
  <p>
  Note that calling {@link MapboxOfflineRouter#findRoute(OfflineRoute, OnOfflineRouteFoundCallback)} while
  {@link MapboxOfflineRouter#removeTiles(String, BoundingBox, OnOfflineTilesRemovedCallback)} could lead
  to undefine behavior
  </p>
  
  @param version     version of offline tiles to use
  @param boundingBox bounding box within which routing tiles should be removed
  @param callback    a callback that will be fired when the routing tiles have been removed completely