remove foss4g sign
remove foss4g sign

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