[gtk/matthiasc/for-master: 6/7] Remove vestigial glade support

[Matthias Clasen <matthiasc src gnome org>]

commit 38e2f9138daf4b5f029b7360ca65506a8e79f674
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Jan 27 23:36:55 2021 -0500

    Remove vestigial glade support
    
    These files have not been kept up to date, and
    glade doesn't work with GTK4 currently.

 gtk/glade/README.glade            | 17 ------------
 gtk/glade/gtk-private-widgets.xml | 33 -----------------------
 gtk/gtkgladecatalog.c             | 56 ---------------------------------------
 gtk/meson.build                   |  1 -
 4 files changed, 107 deletions(-)
---
diff --git a/gtk/meson.build b/gtk/meson.build
index 74a0495189..c1b2186e89 100644
--- a/gtk/meson.build
+++ b/gtk/meson.build
@@ -110,7 +110,6 @@ gtk_private_sources = files([
   'gtkfilechooserutils.c',
   'gtkfilesystemmodel.c',
   'gtkgizmo.c',
-  'gtkgladecatalog.c',
   'gtkhsla.c',
   'gtkiconcache.c',
   'gtkiconcachevalidator.c',