[j.unused3] rm unused fcts, detected by xunused ()

GUI/Model/Mask/MaskList.h

GUI/View/Overlay/OverlayStyle.cpp

GUI/View/Overlay/OverlayStyle.h

GUI/View/Sample/CoreAndShellForm.cpp

GUI/View/Sample/CoreAndShellForm.h

GUI/View/Sample/LayerForm.cpp

GUI/View/Sample/LayerForm.h

GUI/View/Sample/ParticleForm.cpp

GUI/View/Sample/ParticleForm.h

GUI/View/Sample/ParticleLayoutForm.cpp

GUI/View/Sample/ParticleLayoutForm.h

GUI/View/Tool/LayoutUtil.cpp

GUI/View/Tool/LayoutUtil.h

Img3D/Build/PositionBuilders.cpp

Img3D/Build/PositionBuilders.h

Img3D/Model/Geometry.cpp

Img3D/Model/Geometry.h

Img3D/Model/Model.cpp

Img3D/Model/Model.h

Img3D/View/Canvas.cpp