removed default label for ImageData due to writer issues
removed default label for ImageData due to writer issues

spthaolt/VTK,jmerkow/VTK,ashray/VTK-EVM,jeffbaumes/jeffbaumes-vtk,SimVascular/VTK,demarle/VTK,hendradarwin/VTK,berendkleinhaneveld/VTK,hendradarwin/VTK,sgh/vtk,demarle/VTK,mspark93/VTK,hendradarwin/VTK,sankhesh/VTK,gram526/VTK,keithroe/vtkoptix,sankhesh/VTK,sankhesh/VTK,gram526/VTK,cjh1/VTK,keithroe/vtkoptix,SimVascular/VTK,collects/VTK,msmolens/VTK,cjh1/VTK,Wuteyan/VTK,SimVascular/VTK,sankhesh/VTK,jmerkow/VTK,demarle/VTK,gram526/VTK,aashish24/VTK-old,hendradarwin/VTK,aashish24/VTK-old,hendradarwin/VTK,sgh/vtk,candy7393/VTK,daviddoria/PointGraphsPhase1,candy7393/VTK,sumedhasingla/VTK,mspark93/VTK,arnaudgelas/VTK,jmerkow/VTK,jmerkow/VTK,aashish24/VTK-old,SimVascular/VTK,sankhesh/VTK,johnkit/vtk-dev,sumedhasingla/VTK,hendradarwin/VTK,sankhesh/VTK,arnaudgelas/VTK,Wuteyan/VTK,cjh1/VTK,sumedhasingla/VTK,biddisco/VTK,naucoin/VTKSlicerWidgets,msmolens/VTK,msmolens/VTK,sankhesh/VTK,spthaolt/VTK,johnkit/vtk-dev,berendkleinhaneveld/VTK,berendkleinhaneveld/VTK,gram526/VTK,keithroe/vtkoptix,msmolens/VTK,candy7393/VTK,daviddoria/PointGraphsPhase1,sumedhasingla/VTK,cjh1/VTK,spthaolt/VTK,gram526/VTK,biddisco/VTK,daviddoria/PointGraphsPhase1,naucoin/VTKSlicerWidgets,collects/VTK,ashray/VTK-EVM,jeffbaumes/jeffbaumes-vtk,johnkit/vtk-dev,mspark93/VTK,sumedhasingla/VTK,collects/VTK,Wuteyan/VTK,aashish24/VTK-old,aashish24/VTK-old,berendkleinhaneveld/VTK,keithroe/vtkoptix,cjh1/VTK,naucoin/VTKSlicerWidgets,demarle/VTK,candy7393/VTK,sankhesh/VTK,jeffbaumes/jeffbaumes-vtk,candy7393/VTK,biddisco/VTK,ashray/VTK-EVM,jeffbaumes/jeffbaumes-vtk,sumedhasingla/VTK,naucoin/VTKSlicerWidgets,Wuteyan/VTK,keithroe/vtkoptix,Wuteyan/VTK,mspark93/VTK,biddisco/VTK,ashray/VTK-EVM,johnkit/vtk-dev,keithroe/vtkoptix,candy7393/VTK,keithroe/vtkoptix,SimVascular/VTK,cjh1/VTK,arnaudgelas/VTK,Wuteyan/VTK,johnkit/vtk-dev,arnaudgelas/VTK,sgh/vtk,berendkleinhaneveld/VTK,ashray/VTK-EVM,gram526/VTK,berendkleinhaneveld/VTK,daviddoria/PointGraphsPhase1,aashish24/VTK-old,gram526/VTK,sumedhasingla/VTK,SimVascular/VTK,biddisco/VTK,jeffbaumes/jeffbaumes-vtk,SimVascular/VTK,arnaudgelas/VTK,ashray/VTK-EVM,jmerkow/VTK,johnkit/vtk-dev,mspark93/VTK,mspark93/VTK,msmolens/VTK,collects/VTK,jmerkow/VTK,msmolens/VTK,daviddoria/PointGraphsPhase1,collects/VTK,mspark93/VTK,sgh/vtk,gram526/VTK,candy7393/VTK,msmolens/VTK,johnkit/vtk-dev,jmerkow/VTK,berendkleinhaneveld/VTK,demarle/VTK,ashray/VTK-EVM,daviddoria/PointGraphsPhase1,hendradarwin/VTK,spthaolt/VTK,sgh/vtk,jmerkow/VTK,ashray/VTK-EVM,spthaolt/VTK,biddisco/VTK,collects/VTK,Wuteyan/VTK,spthaolt/VTK,spthaolt/VTK,biddisco/VTK,naucoin/VTKSlicerWidgets,arnaudgelas/VTK,jeffbaumes/jeffbaumes-vtk,demarle/VTK,demarle/VTK,demarle/VTK,candy7393/VTK,keithroe/vtkoptix,SimVascular/VTK,msmolens/VTK,mspark93/VTK,sumedhasingla/VTK,naucoin/VTKSlicerWidgets,sgh/vtk