Remove high_bound and low_bound enumerations from IdentifierField
Following the successful removal of usage of the high_bound low_bound, this removes all code and cases referring to them.
GitLab jobs artifacts no longer stored forever as of Monday, November 4th 08:30h. Further information under https://cern.ch/otg0152576
Following the successful removal of usage of the high_bound low_bound, this removes all code and cases referring to them.