Are you referring to your Notification bar at the top? As long as you have WIFI on you are going to get the icon for it in that area and no way to remove it. At least you know when it IS on and it does not take up that much space.
No, I am not referring to the notification bar at the top. I am referring to the notification panel that shows when one slides down the finger from the top of the display. In addition to the various settings toggles, there are notifications listed there. And, I have a persistent "Wi-Fi Connected" notification there. I don't need to see that. I can already see from the notification bar at the top that Wi-Fi is connected.
Osho