build: Remove duplicate definition of the nativation example
build: Remove duplicate definition of the nativation example

GNOME/clutter-gst,lubosz/clutter-gst,lubosz/clutter-gst,GNOME/clutter-gst,ystreet/clutter-gst,skinkie/clutter-gst,lubosz/clutter-gst,GNOME/clutter-gst,skinkie/clutter-gst,ystreet/clutter-gst,ystreet/clutter-gst,skinkie/clutter-gst,ystreet/clutter-gst,GNOME/clutter-gst