There are a few different ways to uninstall FAST Search depending on your operating system.
For Windows users, you can go to the Control Panel and select "Add or Remove Programs." From there, you should be able to select FAST Search and uninstall it.
For Mac users, you can go to the Applications folder and drag the FAST Search icon to the trash.
If you are having trouble uninstalling FAST Search, you can contact customer support for assistance.