Can't calibrate scanner

And it looks like it still needs some de-X11-ification too:

gnome-control-center: gdkwindow-x11.c:5633 drawable is not a native X11 window
gnome-control-center: failed to run calibrate: Failed to execute child process “/usr/bin/gcm-calibrate” (No such file or directory)
gnome-control-center: gdkwindow-x11.c:5633 drawable is not a native X11 window
gnome-control-center: failed to run calibrate: Failed to execute child process “/usr/bin/gcm-calibrate” (No such file or directory)

gcm-calibrate was removed from gnome-color-manager: gnome-color-manager@5a1bf35e

cc @hughsie