I have been asking that very question 2 years ago, GuardianEdge could never answer it for me. I'm posting this just to make sure I get alerted if a solution does get posted.
In my sistuation, the older computers seem to go away after 3-4 months. At the time of testing I was in the same boat you are now, needed it removed instantly. Not really sure if there is an option for it with SEE since the only change that was made between GuardianEdge and SEE was the version numbers and the Symantec branding.