Actually, if you back out of the game by hitting "ROM list" then the icon disappears. The icon just shows that you're currently in the middle of a game...but really doesn't serve much of a purpose.
After your done playing the NES game if you hold down the Home key for 5 seconds it shuts down the program running that should get rid of the controller icon on the status bar.
After your done playing the NES game if you hold down the Home key for 5 seconds it shuts down the program running that should get rid of the controller icon on the status bar.
After your done playing the NES game if you hold down the Home key for 5 seconds it shuts down the program running that should get rid of the controller icon on the status bar.