Basing on where you installed the toolbar, please follow these steps in order to properly remove the toolbar from your system:
Mozilla Firefox: go to `Tools > Addons > Extensions`, locate the toolbar and click `Remove`.
Google Chrome: click the wrench in the upper-right area, then go to `Tools > Extensions` and click the bin.
Internet Explorer: go to `Tools > Manage Addons > Toolbars and Extensions`, locate the Toolbar and click `Disable`.
Safari: The toolbar is only available for Mac OSX and you can uninstall it by opening Applications folder and dragging its icon to the Thrash.