Removed unused constants
Removed unused constants

looks like copy-paste from vtkLine.cxx

Found by clang's new -Wunused-const-variable

Change-Id: I5307cf1d3da096378e0070d3ee8044370c1955c2

candy7393/VTK,johnkit/vtk-dev,SimVascular/VTK,mspark93/VTK,demarle/VTK,demarle/VTK,demarle/VTK,jmerkow/VTK,ashray/VTK-EVM,biddisco/VTK,biddisco/VTK,keithroe/vtkoptix,SimVascular/VTK,jmerkow/VTK,johnkit/vtk-dev,candy7393/VTK,SimVascular/VTK,ashray/VTK-EVM,gram526/VTK,msmolens/VTK,sankhesh/VTK,sankhesh/VTK,msmolens/VTK,SimVascular/VTK,hendradarwin/VTK,msmolens/VTK,candy7393/VTK,sankhesh/VTK,ashray/VTK-EVM,keithroe/vtkoptix,johnkit/vtk-dev,mspark93/VTK,gram526/VTK,hendradarwin/VTK,keithroe/vtkoptix,candy7393/VTK,jmerkow/VTK,berendkleinhaneveld/VTK,gram526/VTK,candy7393/VTK,sumedhasingla/VTK,ashray/VTK-EVM,gram526/VTK,keithroe/vtkoptix,sumedhasingla/VTK,ashray/VTK-EVM,mspark93/VTK,hendradarwin/VTK,mspark93/VTK,berendkleinhaneveld/VTK,ashray/VTK-EVM,biddisco/VTK,johnkit/vtk-dev,jmerkow/VTK,hendradarwin/VTK,sankhesh/VTK,SimVascular/VTK,berendkleinhaneveld/VTK,berendkleinhaneveld/VTK,berendkleinhaneveld/VTK,SimVascular/VTK,gram526/VTK,msmolens/VTK,keithroe/vtkoptix,mspark93/VTK,jmerkow/VTK,msmolens/VTK,sumedhasingla/VTK,keithroe/vtkoptix,sankhesh/VTK,sankhesh/VTK,demarle/VTK,biddisco/VTK,keithroe/vtkoptix,msmolens/VTK,sankhesh/VTK,gram526/VTK,candy7393/VTK,johnkit/vtk-dev,johnkit/vtk-dev,berendkleinhaneveld/VTK,sumedhasingla/VTK,demarle/VTK,jmerkow/VTK,demarle/VTK,biddisco/VTK,jmerkow/VTK,hendradarwin/VTK,SimVascular/VTK,jmerkow/VTK,sumedhasingla/VTK,candy7393/VTK,biddisco/VTK,SimVascular/VTK,sumedhasingla/VTK,msmolens/VTK,berendkleinhaneveld/VTK,demarle/VTK,mspark93/VTK,ashray/VTK-EVM,candy7393/VTK,ashray/VTK-EVM,demarle/VTK,johnkit/vtk-dev,mspark93/VTK,sankhesh/VTK,hendradarwin/VTK,msmolens/VTK,mspark93/VTK,gram526/VTK,sumedhasingla/VTK,keithroe/vtkoptix,gram526/VTK,hendradarwin/VTK,biddisco/VTK,sumedhasingla/VTK