CC-4375: DB Upgrade Error, from 2.0.3 to 2.2

-fixed

install_minimal/upgrades/airtime-2.2.0/data/upgrade.sql

@@ -15,8 +15,6 @@ ALTER TABLE cc_files
 
 DROP TABLE cc_access;
 
-DROP SEQUENCE cc_access_id_seq;
-
 CREATE FUNCTION airtime_to_int(chartoconvert character varying) RETURNS integer
     AS 
     'SELECT CASE WHEN trim($1) SIMILAR TO ''[0-9]+'' THEN CAST(trim($1) AS integer) ELSE NULL END;'