That's currently not possible, and I suspect we probably won't change it unless we get a lot of demand, as it generally makes sense for the team to be registered in OJS. If no particular editing roles are desired, I'd suggest having your team register as Readers (taking care to disable the notification sign-ups in their profiles if they don't want to receive emails).
Open Journal Systems Team
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July 11 - 13, 2007, Vancouver, BC, Canada