Tap the All Apps icon on the tray and select the Apps tab on the top.
Touch and hold the icon of the app you want to uninstall.
Drag and drop the app icon over the Uninstall icon then tap 'OK' to confirm. (The Uninstall icon appears only for the app that can be uninstalled from the system.)
Alternatively, you can run the Settings app, tap Apps under DEVICE then select the app you want to uninstall from the list.