Remove obsolete code to use a cached mime-type
Remove obsolete code to use a cached mime-type

The non-standard "filechooser::mime-type" was a remnant of the recent-files code using
a hand-built GFileInfo; now we just query the file info ourselves.

Signed-off-by: Federico Mena Quintero <4999915a961edfd7686112c2935288e1266eae14@novell.com>

Lyude/gtk-,Sidnioulz/SandboxGtk,jadahl/gtk,davidt/gtk,johne53/MB3Gtk-2,msteinert/gtk,msteinert/gtk,Distrotech/gtk2,chergert/gtk,ahodesuka/gtk,bratsche/gtk-,bratsche/gtk-,ahodesuka/gtk,grubersjoe/adwaita,grubersjoe/adwaita,ebassi/gtk,jigpu/gtk,simokivimaki/gtk,Distrotech/gtk,grubersjoe/adwaita,ahodesuka/gtk,jessevdk/gtk,davidgumberg/gtk,Sidnioulz/SandboxGtk,ahodesuka/gtk,Distrotech/gtk,davidt/gtk,alexlarsson/gtk,johne53/MB3Gtk-2,jessevdk/gtk,Distrotech/gtk2,ebassi/gtk,jessevdk/gtk,davidt/gtk,jadahl/gtk,simokivimaki/gtk,Distrotech/gtk,Lyude/gtk-,bratsche/gtk-,jigpu/gtk,davidgumberg/gtk,Distrotech/gtk2,chergert/gtk,Adamovskiy/gtk,chipx86/gtk,chergert/gtk,msteinert/gtk,Lyude/gtk-,jessevdk/gtk,Distrotech/gtk2,jadahl/gtk,jigpu/gtk,alexlarsson/gtk,ebassi/gtk,Unity-Technologies/gtk,simokivimaki/gtk,jessevdk/gtk,nacho/gtk-,chipx86/gtk,nacho/gtk-,chipx86/gtk,bratsche/gtk-,jadahl/gtk,ebassi/gtk,msteinert/gtk,Adamovskiy/gtk,jigpu/gtk,simokivimaki/gtk,Unity-Technologies/gtk,davidgumberg/gtk,simokivimaki/gtk,Adamovskiy/gtk,Distrotech/gtk2,msteinert/gtk,grubersjoe/adwaita,Lyude/gtk-,davidgumberg/gtk,bratsche/gtk-,Sidnioulz/SandboxGtk,Lyude/gtk-,jadahl/gtk,Lyude/gtk-,Sidnioulz/SandboxGtk,Distrotech/gtk,johne53/MB3Gtk-2,Distrotech/gtk2,davidt/gtk,jessevdk/gtk,chergert/gtk,ebassi/gtk,simokivimaki/gtk,grubersjoe/adwaita,Sidnioulz/SandboxGtk,ahodesuka/gtk,grubersjoe/adwaita,Adamovskiy/gtk,jigpu/gtk,alexlarsson/gtk,jadahl/gtk,davidt/gtk,Adamovskiy/gtk,nacho/gtk-,msteinert/gtk,johne53/MB3Gtk-2,chergert/gtk,chergert/gtk,Distrotech/gtk,bratsche/gtk-,ebassi/gtk,jigpu/gtk,Unity-Technologies/gtk,ahodesuka/gtk,Lyude/gtk-,grubersjoe/adwaita,ahodesuka/gtk,Unity-Technologies/gtk,alexlarsson/gtk,Unity-Technologies/gtk,jigpu/gtk,chipx86/gtk,jigpu/gtk,ahodesuka/gtk,chergert/gtk,alexlarsson/gtk,Adamovskiy/gtk,Adamovskiy/gtk,jessevdk/gtk,Adamovskiy/gtk,grubersjoe/adwaita,davidgumberg/gtk,chergert/gtk,nacho/gtk-,nacho/gtk-,davidt/gtk,jadahl/gtk,johne53/MB3Gtk-2,jadahl/gtk,davidgumberg/gtk,Sidnioulz/SandboxGtk,Lyude/gtk-,alexlarsson/gtk,chipx86/gtk,davidgumberg/gtk,alexlarsson/gtk,davidgumberg/gtk,alexlarsson/gtk