how can I clear backups from HD
I just got a new MBP with mountain lion. I migrated from old mac and the data takes up too much space on the HD. System says that most of the space is "backups". Can I clear the old backups? My new MBP has no optical drive and I have no back up of the OS.
MacBook Pro with Retina display, OS X Mountain Lion (10.8.3)