Removed incorrect description's sentence.
Removed incorrect description's sentence.

Description was wrong when it explained: "The two areas are separated
by a GtkHSeparator.". These separators are not used any more.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=643496

chergert/gtk,jadahl/gtk,jigpu/gtk,Adamovskiy/gtk,alexlarsson/gtk,Distrotech/gtk2,davidgumberg/gtk,Lyude/gtk-,bratsche/gtk-,grubersjoe/adwaita,Lyude/gtk-,jadahl/gtk,simokivimaki/gtk,Lyude/gtk-,jadahl/gtk,davidt/gtk,msteinert/gtk,ebassi/gtk,grubersjoe/adwaita,bratsche/gtk-,ahodesuka/gtk,ahodesuka/gtk,Distrotech/gtk2,Adamovskiy/gtk,simokivimaki/gtk,davidgumberg/gtk,ebassi/gtk,davidt/gtk,jessevdk/gtk,jigpu/gtk,Distrotech/gtk2,ahodesuka/gtk,Sidnioulz/SandboxGtk,grubersjoe/adwaita,jessevdk/gtk,Sidnioulz/SandboxGtk,Distrotech/gtk2,simokivimaki/gtk,Adamovskiy/gtk,chergert/gtk,bratsche/gtk-,davidgumberg/gtk,Lyude/gtk-,ebassi/gtk,msteinert/gtk,davidgumberg/gtk,chergert/gtk,ebassi/gtk,Adamovskiy/gtk,alexlarsson/gtk,Distrotech/gtk2,jigpu/gtk,ahodesuka/gtk,chergert/gtk,msteinert/gtk,jigpu/gtk,Adamovskiy/gtk,jigpu/gtk,alexlarsson/gtk,chergert/gtk,chergert/gtk,jigpu/gtk,jessevdk/gtk,bratsche/gtk-,davidgumberg/gtk,chergert/gtk,ahodesuka/gtk,simokivimaki/gtk,simokivimaki/gtk,jessevdk/gtk,ebassi/gtk,alexlarsson/gtk,jessevdk/gtk,Adamovskiy/gtk,davidt/gtk,grubersjoe/adwaita,jadahl/gtk,Lyude/gtk-,msteinert/gtk,grubersjoe/adwaita,simokivimaki/gtk,grubersjoe/adwaita,alexlarsson/gtk,jadahl/gtk,Sidnioulz/SandboxGtk,Adamovskiy/gtk,alexlarsson/gtk,bratsche/gtk-,davidt/gtk,ahodesuka/gtk,alexlarsson/gtk,ahodesuka/gtk,davidgumberg/gtk,Distrotech/gtk2,davidt/gtk,jessevdk/gtk,Lyude/gtk-,Sidnioulz/SandboxGtk,chergert/gtk,Lyude/gtk-,Adamovskiy/gtk,jigpu/gtk,grubersjoe/adwaita,Lyude/gtk-,jadahl/gtk,davidgumberg/gtk,msteinert/gtk,ebassi/gtk,msteinert/gtk,Sidnioulz/SandboxGtk,jadahl/gtk,alexlarsson/gtk,davidgumberg/gtk,davidt/gtk,jessevdk/gtk,ahodesuka/gtk,grubersjoe/adwaita,jadahl/gtk,jigpu/gtk,Sidnioulz/SandboxGtk,bratsche/gtk-