How do you turn off dlc map packs black ops?

1. Go to xbox dashboard

2. Find System Settings, Memory

3. Select Hard Drive, games

4. Search for black ops press a

5. Find the the map pack and move it to a usb stick (why waste money deleting it) so it can be moved over again if u want it back

Map packs are good but stupid as once u buy them u can only play with others who have the same map pack, there should be an option to disable it but there isn't.

the Annihilation map pack is rubbish! (just thought i would add that)