Remove unused page up/down key bindings
Remove unused page up/down key bindings

Moving the text by a "page" depends on being able to define a
"page size" in terms of lines of text. Since we don't define
something similar to an Adjustment that allows us to handle this
behaviour, we should defer the paging implementation to a higher
level class based on ClutterText.

spatulasnout/clutter,Distrotech/clutter,nobled/clutter,djdeath/clutter-android,collects/clutter,Distrotech/clutter,jigpu/clutter,heysion/clutter-clone,rkudiyarov/clutter_osx,kerrickstaley/clutter-vala,jigpu/clutter,djdeath/clutter-multithreaded,djdeath/clutter-android,djdeath/clutter-multithreaded,collects/clutter,djdeath/clutter-multithreaded,nobled/clutter,kerrickstaley/clutter-vala,djdeath/clutter,rkudiyarov/clutter_osx,collects/clutter,djdeath/clutter,kerrickstaley/clutter-vala,djdeath/clutter,dlespiau/clutter,spatulasnout/clutter,dlespiau/clutter,jigpu/clutter,djdeath/clutter,tardyp/clutter,nobled/clutter,djdeath/clutter-android,ebassi/clutter,Distrotech/clutter,GNOME/clutter,djdeath/clutter-android,ebassi/clutter,collects/clutter,ebassi/clutter,kerrickstaley/clutter-vala,jigpu/clutter,heysion/clutter-clone,jigpu/clutter,spatulasnout/clutter,tardyp/clutter,tardyp/clutter,djdeath/clutter-android,GNOME/clutter,heysion/clutter-clone,GNOME/clutter,djdeath/clutter,djdeath/clutter-multithreaded,jigpu/clutter,spatulasnout/clutter,GNOME/clutter,rkudiyarov/clutter_osx,ebassi/clutter,spatulasnout/clutter,Distrotech/clutter,Distrotech/clutter,rkudiyarov/clutter_osx,heysion/clutter-clone,dlespiau/clutter,ebassi/clutter,collects/clutter,heysion/clutter-clone,GNOME/clutter,Distrotech/clutter,djdeath/clutter