Remove using directives from svpgid.cxx...
Remove using directives from svpgid.cxx...

...so that the hack of including it in gtk3salnativewidgets-gtk.cxx actually works.

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core