presto-raptor-legacy/src/main/java/io/prestosql/plugin/raptor/legacy/RaptorMetadata.java/RaptorMetadata/supportsMetadataDelete
class RaptorMetadata:    @Override
    public boolean supportsMetadataDelete(ConnectorSession session, ConnectorTableHandle tableHandle, ConnectorTableLayoutHandle tableLayoutHandle)
    {
        return false;
    }