Remove `notify` and `child-notify` signals for lack of `ParamSpec` bindings
Remove `notify` and `child-notify` signals for lack of `ParamSpec` bindings

gkoz/rust-gnome-gtk,gkoz/gtk-rs-gtk,EPashkin/rust-gnome-gtk,EPashkin/rust-gnome-gtk,daa84/gtk,Susurrus/gtk,Susurrus/gtk,rust-gnome/gtk,rust-gnome/gtk,daa84/gtk,gkoz/rust-gnome-gtk,gkoz/gtk-rs-gtk