remove relationship

    def remove(self, app, leaveObjects=False):
        Device._relations = tuple(
            [x for x in Device._relations if x[0] != '<componentname>'])

        self.rebuildRelations(app.zport.dmd)
        super(ZenPack, self).remove(app, leaveObjects)

    def rebuildRelations(self, dmd):
        for d in dmd.Devices.getSubDevices():
            d.buildRelations()
            d.os.buildRelations()