Removed references to vtkgl
Removed references to vtkgl

Change-Id: Ifee1db260ac2d1f4ff3b5147492cdb51167ba7c3

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