PriorKnowledgeData: Remove CGAL dependency

PKD has no real dependency on CGAL. The CMake dependency was removed also in https://git.h2t.iar.kit.edu/sw/armarx/prior-knowledge-data/-/commit/501865388cc9022f7347c7f78a0a17c1f2997885

changed milestone to %Release 23.02.2.0

added type::module label

assigned to @pohl

created branch 281-priorknowledgedata-remove-cgal-dependency to address this issue

mentioned in merge request !502 (closed)

closed

There is indeed a dependency of PriorKnowledgeData on CGAL:

OOBB.h:3 has a preprocessor check if CGAL is installed. Who writes codes like this? This should be fixed.