“can I even delete that partition or is that not possible? And if it is possible, how do I do it?”
IMO The only way to remove U3, and it’s associated CD drive, is to run the Uninstall U3 Launchpad option from the U3 Launchpad Settings menu on the LAUNCHPAD window. There use to be a separate utility you could download that would uninstall U3 but I don’t remember where it is. Sorry.
