Plutonium

Hello folks..
How do i remove the Globe and Asteroids in Black Ops 2 Zombies???
I think its just unnecessary to have it in my menu and it ruins my custom background.
Thank you

So im trying to customize my Black Ops 2 experience by changing the background of my main menu but when i try to follow every tutorial i cant just get the game to save it... I deleted the numbers in the file and when i load my game it still wont show :C