Remove placeholder CF node
Motivated by https://its.cern.ch/jira/browse/ATR-21886
Removed empty placeholder CF node. Fixed test for empty nodes in ModeOR since not all sequencers have ModeOR property
Motivated by https://its.cern.ch/jira/browse/ATR-21886
Removed empty placeholder CF node. Fixed test for empty nodes in ModeOR since not all sequencers have ModeOR property