How to stop getting text notifications?

So on my iphone i did this thing where you get a notification every time a friend that you chose on facebook posts anything. So of course all my friends post a stupid status every 2 minutes and i didn't know how make it stop so i just unfriended them. Does anyone know how i remove the friends in the notififcation list but keep them as friends?

Go into your settings on facebook and go to the mobile tab and simply uncheck the boxes.

Go to your setting and go down to the Facebook app, click it and then where it says notifications just turn them all off.