Revert "Instance API improved to support both old and new instance panel"
Revert "Instance API improved to support both old and new instance panel"

vasichkin/contrib-python-qubell-client,vasichkin/contrib-python-qubell-client,chemikadze/contrib-python-qubell-client,qubell/contrib-python-qubell-client,qubell/contrib-python-qubell-client,chemikadze/contrib-python-qubell-client