remove code which duplicated vtkNumpy
remove code which duplicated vtkNumpy

test file runs successfully

mitdrc/director,empireryan/director,empireryan/director,RussTedrake/director,openhumanoids/director,rdeits/director,edowson/director,gizatt/director,RussTedrake/director,gizatt/director,rdeits/director,edowson/director,RobotLocomotion/director,mitdrc/director,mitdrc/director,edowson/director,empireryan/director,gizatt/director,patmarion/director,openhumanoids/director,manuelli/director,mithrandir123/director,rdeits/director,empireryan/director,edowson/director,empireryan/director,manuelli/director,manuelli/director,patmarion/director,mitdrc/director,RobotLocomotion/director,mithrandir123/director,openhumanoids/director,openhumanoids/director,RussTedrake/director,patmarion/director,gizatt/director,mithrandir123/director,openhumanoids/director,patmarion/director,patmarion/director,manuelli/director,RobotLocomotion/director,edowson/director,mitdrc/director,RussTedrake/director,mithrandir123/director,manuelli/director,gizatt/director,RobotLocomotion/director,rdeits/director,RussTedrake/director,RobotLocomotion/director,mithrandir123/director,rdeits/director