stylecontext: Remove leftover debugging
stylecontext: Remove leftover debugging

... that actually was both wrong, a performance failure and has been
there since the original checkin.

Updating the cached style data absolutely does not mean clearing all
cached style data first. There's nothing to update then.

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