glade3: move to to meta-xfce
* lubxfce4ui is the last recipe requiring glade3 optionally
* old glade3 is necessary to open xfce glade files based on gtk2
* meta-xfce depends on gnome-layer already so no adjustment in layer
dependencies is necessary
Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>