remove unused variables
remove unused variables

mtCarto/PDAL,verma/PDAL,lucadelu/PDAL,boundlessgeo/PDAL,lucadelu/PDAL,jwomeara/PDAL,DougFirErickson/PDAL,jwomeara/PDAL,mpgerlek/PDAL-old,radiantbluetechnologies/PDAL,Sciumo/PDAL,verma/PDAL,mpgerlek/PDAL-old,radiantbluetechnologies/PDAL,boundlessgeo/PDAL,jwomeara/PDAL,verma/PDAL,verma/PDAL,mpgerlek/PDAL-old,mtCarto/PDAL,Sciumo/PDAL,Sciumo/PDAL,verma/PDAL,boundlessgeo/PDAL,jwomeara/PDAL,mtCarto/PDAL,verma/PDAL,mpgerlek/PDAL-old,mtCarto/PDAL,DougFirErickson/PDAL,radiantbluetechnologies/PDAL,radiantbluetechnologies/PDAL,DougFirErickson/PDAL,verma/PDAL,DougFirErickson/PDAL,Sciumo/PDAL,lucadelu/PDAL,boundlessgeo/PDAL,lucadelu/PDAL