Remove Pango.FontDescription() conversion.
Remove Pango.FontDescription() conversion.

It is now properly handled by an override.

alexef/pygobject,davibe/pygobject,nzjrs/pygobject,davidmalcolm/pygobject,choeger/pygobject-cmake,pexip/pygobject,Distrotech/pygobject,jdahlin/pygobject,alexef/pygobject,choeger/pygobject-cmake,nzjrs/pygobject,davidmalcolm/pygobject,sfeltman/pygobject,sfeltman/pygobject,davibe/pygobject,thiblahute/pygobject,choeger/pygobject-cmake,Distrotech/pygobject,Distrotech/pygobject,pexip/pygobject,alexef/pygobject,pexip/pygobject,GNOME/pygobject,MathieuDuponchelle/pygobject,thiblahute/pygobject,jdahlin/pygobject,jdahlin/pygobject,Distrotech/pygobject,davibe/pygobject,MathieuDuponchelle/pygobject,GNOME/pygobject,davibe/pygobject,davidmalcolm/pygobject,thiblahute/pygobject,sfeltman/pygobject,MathieuDuponchelle/pygobject,nzjrs/pygobject,GNOME/pygobject