richms: I turned all 4 options on there off and the notification is still there. Is it somewhere else to turn off?
There is an On/Off toggle on the notifications slide when you pull it down, and also on the 'power' page in the settings menu.
Edit: Note - On/Off is to toggle the powersaver mode not the notification. I assume just taking away the notification would require a rooted phone and an alteration to the ROM.