packager.sh: removed test installation of libnetcdf6
packager.sh: removed test installation of libnetcdf6

vup1120/oq-hazardlib,gem/oq-engine,gem/oq-engine,gem/oq-engine,vup1120/oq-hazardlib,gem/oq-engine,rcgee/oq-hazardlib,gem/oq-hazardlib,gem/oq-hazardlib,gem/oq-hazardlib,vup1120/oq-hazardlib,gem/oq-engine,rcgee/oq-hazardlib