Remove a user from an organization.

def destroy(
            self, request, pk=None, parent_lookup_seedteam=None,
            parent_lookup_seedteam__organization=None):
        '''Remove a user from an organization.'''
        user = self.get_object()
        team = self.check_team_permissions(
            request, parent_lookup_seedteam,
            parent_lookup_seedteam__organization)
        team.users.remove(user)
        return Response(status=status.HTTP_204_NO_CONTENT)