code: public static void deleteRTreeSpatialIndexExtension(
  			GeoPackageCore geoPackage) {
  
  		RTreeIndexCoreExtension rTreeIndexExtension = getRTreeIndexExtension(geoPackage);
  		if (rTreeIndexExtension.has()) {
  			rTreeIndexExtension.deleteAll();
  		}
  
  	}
docs: Delete the RTree Spatial extension
  
  @param geoPackage
  GeoPackage
  @since 3.2.0