Just delete that bottom backup set if you don't want it from the Settings page -> Backup tab.

If it's the original one it created (I presume based on the name) then I think you can't delete it, you could have just made it one of your backup sets.

To stop it backing up to the cloud, select the backup set (under Settings->Backup), in the destinations panel click "change" and then uncheck Crashplan Central

I see you have no files selected anyway so it won't back anything up but I know it would irk me having the extra backup set there even if it was harmless.