Want to remove a Federated Search area? It's easy!
Process
1) Log into SmartSuite v4.1 as an administrator
2) Click -> Settings -> System Settings
3) Click the tab
4) Expand the option
5) Expand the Database that you want to delete
6) Click to remove that datasource
7) Click in the toolbar at the bottom of the window to apply the settings to your SmartSuite instance.