We're not removing teams from BOINC, just the requirement that you have to be in Team Gridcoin in order to earn GRC. After that has been changed you can be a member of any team you want.
Edit: But I have a feeling you already know that and that I'm misinterpreting :D
Ah, let me try clarify. I remember there was a discussion going around that users may be allowed to join two teams, which I would see as detrimental.
If the implementation would be to void Team Gridcoin added effect altogether, where it becomes a standard BOINC team and has nothing to do with Gridcoin reward, that would be great.