[glom/gtkmm4v4] gtkmm4: Glade files: Remove GtkWidget app-paintable property.

[Murray Cumming <murrayc src gnome org>]

commit b02dd6fc8a2895190be9dc2d09026f164cf7cf65
Author: Murray Cumming <murrayc murrayc com>
Date:   Mon Apr 17 13:25:51 2017 +0200

    gtkmm4: Glade files: Remove GtkWidget app-paintable property.
    
    Removed and apparently no longer necessary or in need of replacement:
    https://git.gnome.org/browse/gtk+/commit/?id=5071206d60d11416b67fb7ac1c9771de06626274

 data/ui/operator/window_main.glade |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/data/ui/operator/window_main.glade b/data/ui/operator/window_main.glade
index e479492..36723d7 100644
--- a/data/ui/operator/window_main.glade
+++ b/data/ui/operator/window_main.glade
@@ -89,7 +89,6 @@
             </child>
             <child>
               <object class="GtkInfoBar" id="infobar_progress">
-                <property name="app_paintable">True</property>
                 <property name="can_focus">False</property>
                 <child internal-child="content_area">
                   <object class="GtkBox" id="infobar-content_area">