I don’t know. I think that in theory, sure. Everyone SHOULD get an inherent level playing field. And if that ever in a bazillion years happened, then yes, diversity for the sake of acknowledging equality discrepancies, or marginalized groups, as it were, would become unnecessary.
The thing is, even if everyone SHOULD get a level playing field, everyone doesn’t.
Equality may perhaps be a right, but no power on earth can ever turn it into a fact. --Honore de Balzac