(postgres) Upgrading 4.7 to 5.0 in postgres show the following warnings in upgrade check

The database is not consistent with the distribution database.

To synchronize your database with the distribution setup, run the following SQL commands:

DROP INDEX ezgeneral_digest_user_id;
CREATE UNIQUE INDEX ezgeneral_digest_user_id ON ezgeneral_digest_user_settings USING btree ( user_id );
DROP TABLE ez_ct_change_entry;
DROP TABLE ez_ct_change_log;