Revert "Increment release branch version to 5.8.0"
Revert "Increment release branch version to 5.8.0"

This reverts commit b63dc5cb6fc6202f8682357aaea9731969809cbe.

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