remove unused definitions from pdal_defines
remove unused definitions from pdal_defines

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