Weird, I remember that there was a remove button in the past. Can you open the Keychain Access application and look in either the Login or Local Items/iCloud keychains (more likely the former) whether there is a related entry there (searching for the name would probably suffice). You can delete the entry there, maybe it takes care of the profile too. It will probably say something like 802.1X in the kind column.
Is there a separate menu in System Preferences called Profiles? If you can’t see it, open Spotlight and type “Profiles”. You should end up with the following result. Opening it will open the hidden preference in System Preferences where you will hopefully be able to remove it.