Sounds like you're referring to the navigation icons. If you'd like to remove them, you could switch to gesture navigation. It also comes with an option to remove the gesture handle too, for a cleaner, less cluttered look & feel. 'Settings'→'Display'→'Navigation Bar'→('Navigation type' section) Now you can choose from 'Buttons' or 'Swipe Gestures'. If you've chosen 'Swipe Gestures' as your 'Navigation type', you can toggle the 1st opt right below that says 'Gesture Hint'. Having it off will hide the gesture bar at the bottom of the screen at the very center (bottom dead center or BDC).
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