code: public static void deleteRelatedTablesExtension(GeoPackageCore geoPackage) {
  
  		RelatedTablesCoreExtension relatedTablesExtension = getRelatedTableExtension(geoPackage);
  		if (relatedTablesExtension.has()) {
  			relatedTablesExtension.removeExtension();
  		}
  
  	}
docs: Delete the Related Tables extension
  
  @param geoPackage
  GeoPackage
  @since 3.2.0