Remove the unnecessary find_package command.
Remove the unnecessary find_package command.

This generated a "Policy CMP0020 is not set" message when
building VTK with QT enabled.

Change-Id: Ia06611d46348a63a33cf85eaa871bf00f5e78563
Signed-off-by: Andrew Maclean <c9b2f5a1dba95786ee62d836bcc66ea197719bbe@gmail.com>

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