rm extra level from GUI/ba3d <- GUI/ba3d/ba3d

GUI/CMakeLists.txt

GUI/ba3d/.gitignore

GUI/ba3d/CMakeLists.txt

GUI/ba3d/def.cpp

GUI/ba3d/def.h

GUI/ba3d/model/geometry.cpp

GUI/ba3d/model/geometry.h

GUI/ba3d/model/geometry/box.cpp

GUI/ba3d/model/geometry/column.cpp

GUI/ba3d/model/geometry/cuboctahedron.cpp

GUI/ba3d/model/geometry/dodecahedron.cpp

GUI/ba3d/model/geometry/icosahedron.cpp

GUI/ba3d/model/geometry/plane.cpp

GUI/ba3d/model/geometry/ripple.cpp

GUI/ba3d/model/geometry/sphere.cpp

GUI/ba3d/model/geometry/truncbox.cpp

GUI/ba3d/model/geometry_inc.cpp

GUI/ba3d/model/geometry_inc.h

GUI/ba3d/model/layer.cpp

GUI/ba3d/model/layer.h