Remove duplicate GType definitions
Remove duplicate GType definitions

gkoz/gtk-rs-glib,gkoz/gtk-rs-cairo,gkoz/gtk-rs-pango,mitaa/gtk,insanebits/gtk,Susurrus/glib,LordSentox/gtk,rust-gnome/cairo,drewet/gtk,rust-gnome/gtk,rtsuk/cairo,rust-gnome/gtk,gkoz/rust-gnome-cairo,rust-gnome/glib,Susurrus/gtk,gkoz/rust-gnome-gtk,LordSentox/gtk,Susurrus/gtk,insanebits/gtk,gkoz/rust-gnome-glib,mitaa/gtk,daa84/gtk,daa84/gtk,EPashkin/rust-gnome-glib,gkoz/rust-gnome-gtk,gkoz/gtk-rs-gtk,nicokoch/glib,EPashkin/rust-gnome-gtk,gkoz/gtk-rs-gtk,drewet/gtk,EPashkin/rust-gnome-gtk