Revert "ENH: Updated script for Eigen third party update"
Revert "ENH: Updated script for Eigen third party update"

This reverts commit 06d395f4bbbe27a421358c73d7ce08b88e9cdb93.

richardbeare/ITK,InsightSoftwareConsortium/ITK,InsightSoftwareConsortium/ITK,hjmjohnson/ITK,richardbeare/ITK,hjmjohnson/ITK,BRAINSia/ITK,BRAINSia/ITK,richardbeare/ITK,richardbeare/ITK,Kitware/ITK,BRAINSia/ITK,thewtex/ITK,InsightSoftwareConsortium/ITK,thewtex/ITK,thewtex/ITK,thewtex/ITK,Kitware/ITK,hjmjohnson/ITK,InsightSoftwareConsortium/ITK,Kitware/ITK,BRAINSia/ITK,richardbeare/ITK,thewtex/ITK,hjmjohnson/ITK,richardbeare/ITK,thewtex/ITK,InsightSoftwareConsortium/ITK,InsightSoftwareConsortium/ITK,thewtex/ITK,BRAINSia/ITK,hjmjohnson/ITK,Kitware/ITK,InsightSoftwareConsortium/ITK,Kitware/ITK,Kitware/ITK,hjmjohnson/ITK,Kitware/ITK,hjmjohnson/ITK,richardbeare/ITK,BRAINSia/ITK,BRAINSia/ITK