Delete super-mario-bros-the-lost-levels.jpg

Incorrect box art, I attached the correct box art.
(Btw I have no idea how GitHub works, so if I did something wrong please let me know so I don't do it again)
![super-mario-bros-the-lost-levels](https://f.cloud.github.com/assets/6970150/2432718/6d2f8896-ad70-11e3-986d-055682ad1a04.jpg)