How can we delete this?

well my firend got a ps3 a used one we were going though the menu and pressed on internet browser and we pressed to type google but on the side when you write something the words you use pop out and there was p0rn so we got when pressed on internet search and it had some p0rn web site how can we delete this were just 13 every other kid talks about p0rn but we got lifes