Deleting a user from a database
You can delete a user from a database at any time. This does not delete the user, only the link between that user and a database - refer to Deleting a user if you want to delete a user permanently.
To delete a user from a database:
Click on the PostgreSQL link in the navigation area.
Click on the minus sign link next to the required database in the Postgres Databases area.
Click on the Yes button in the confirmation window.