Uninstalling an application is straight forward.

On Windows, just open the "Parameters" panel, and the standard "Add/Suppress programs" utility. Then select the application entry in the list and click "Add/Supress".

On other platforms (Windows too in fact), there is an uninstall script in the directory where the applications was installed. Just execute this script.

You will follow a few steps, and a report will tell you in the end if some files or directories could not be removed. You can then remove them manually if you wish.