Remove egg make target
Remove egg make target

eggs are deprecated and the command was referencing long
gone files and failing, so nobody was using it.

https://bugzilla.gnome.org/show_bug.cgi?id=777719

pexip/pygobject,GNOME/pygobject,pexip/pygobject,pexip/pygobject,GNOME/pygobject,GNOME/pygobject