In order to uninstall a program press the 'Start' button, then open the 'Control Panel' and double click the option 'Programs and Properties' or "add/uninstall programs" then search for the program you wish to uninstall on the programs list, double click it and choose 'Uninstall'.
Or if the app is an add on, click Tools on your browser, find add ons or extensions and search for the app you wish to disable or remove.