'Removes labels with given names from a given client object.'

def RemoveClientLabels(self, client, labels_names):

    affected_owners = set()
    for label in client.GetLabels():
        if ((label.name in labels_names) and (label.owner != 'GRR')):
            affected_owners.add(label.owner)
    for owner in affected_owners:
        client.RemoveLabels(owner=owner, *labels_names)
