If you are no longer using this feature and want to continue using your database as before, we recommend simply DROP EXTENSION. This is because if you delete definitions such as confidentiality matrices and confidentiality levels created using this extension using the deletion functions provided by this extension, the roles automatically created by this extension will be deleted, the privileges of roles granted by this extension are revoked. Simply dropping this extension will only drop the tables it contains, it will not do any of these things.