def unregister_event_channel(connection: connection) -> None:
log('<STR_LIT>', logger_name=_LOGGER_NAME)<EOL>execute(connection, '<STR_LIT>')<EOL>
Un-register psycopg2-pgevents event channel from the database.

    Parameters
    ----------
    connection: psycopg2.extensions.connection
        Active connection to a PostGreSQL database.

    Returns
    -------
    None