Revert "added copyDeep for PlanarFigures"

This reverts commit 1b4aceab0b0b94eb29131afc9210369e780ae272.
extended unittest for PlanarArrow with cloning
Merge branch 'bug-18556-add-copydeep-for-planarFigure'

Conflicts:
	Modules/PlanarFigure/DataManagement/mitkPlanarFigure.cpp