posgresql function to cleanup the schemas within a database

cleanup_schemas.sql

DROP FUNCTION IF EXISTS cleanup( ) CASCADE;
CREATE OR REPLACE FUNCTION
    cleanup()
    RETURNS VOID
AS $$
DECLARE
    row RECORD ;
BEGIN
    FOR row IN WITH T1 AS (SELECT nspname :: TEXT AS schema_name
                           FROM pg_catalog.pg_namespace), T2 AS (SELECT schema_name
                                                                 FROM T1
                                                                 WHERE schema_name LIKE 'unbound_%') SELECT *
               FROM T2
    LOOP
        RAISE LOG 'DROP SCHEMA % CASCADE', row.schema_name;
        EXECUTE 'DROP SCHEMA '|| quote_ident(row.schema_name) || ' CASCADE';
    END LOOP;
END
$$ LANGUAGE plpgsql;

SELECT cleanup();