Remove all unreferenced groups, complexTypes, simpleTypes

[skinkie]

Fix #857
Fix #874

[trurlurl]

I cannot judge whether everything is really obsolete, so I don't dare approving.

Taking the example of LiftCallEquipmentRefStructure: I guess this is removed because element LiftCallEquipmentRef refers to the more general AccessEquipmentRefStructure. But wouldn't having it refer to LiftCallEquipmentRefStructure be the more proper solution?

PR #811 has been closed assuming that this PR #872 takes care of the changes in the examples. But this isn't the case, is it?

[skinkie]

I cannot judge whether everything is really obsolete, so I don't dare approving.

Taking the example of LiftCallEquipmentRefStructure: I guess this is removed because element LiftCallEquipmentRef refers to the more general AccessEquipmentRefStructure. But wouldn't having it refer to LiftCallEquipmentRefStructure be the more proper solution?

I would tocally agree. Those are actual valid bugs in the existing schema. Therefore we need people to actually validate why some structures are being removed.

PR #811 has been closed assuming that this PR #872 takes care of the changes in the examples. But this isn't the case, is it?

This is I think an unrelated comment. #811 is done in #876.

[ue71603]

@skinkie should @Aurige look at this first?

[skinkie]

I guess start with the other assigned issues first, since this has merge conflicts now.