[planner: 60/61] sidebar: Port away from GtkObject

[Mart Raudsepp <mraudsepp src gnome org>]

commit 91384a164f4d13045bac720b2cc811a0d4dcb3ef
Author: Mart Raudsepp <leio gentoo org>
Date:   Sun Mar 21 18:37:16 2021 +0200

    sidebar: Port away from GtkObject
    
    The GtkObject::destroy override here did nothing, so just drop it in
    preparation of GTK3 together with other GtkObject usage removals.

 src/planner-sidebar.c | 13 -------------
 1 file changed, 13 deletions(-)
---
diff --git a/src/planner-sidebar.c b/src/planner-sidebar.c
index 027a6d4c..15d423f5 100644
--- a/src/planner-sidebar.c
+++ b/src/planner-sidebar.c
@@ -48,7 +48,6 @@ enum {
 static void     sidebar_class_init           (PlannerSidebarClass *klass);
 static void     sidebar_init                 (PlannerSidebar      *bar);
 static void     sidebar_finalize             (GObject        *object);
-static void     sidebar_destroy              (GtkObject      *object);
 static void     sidebar_event_box_realize_cb (GtkWidget      *widget,
                                              PlannerSidebar      *bar);
 static void     sidebar_style_set            (GtkWidget      *widget,
@@ -88,19 +87,15 @@ static void
 sidebar_class_init (PlannerSidebarClass *class)
 {
        GObjectClass   *o_class;
-       GtkObjectClass *object_class;
        GtkWidgetClass *widget_class;
 
        parent_class = g_type_class_peek_parent (class);
 
        o_class = (GObjectClass *) class;
-       object_class = (GtkObjectClass *) class;
        widget_class = (GtkWidgetClass *) class;
 
        o_class->finalize = sidebar_finalize;
 
-       object_class->destroy = sidebar_destroy;
-
        widget_class->style_set = sidebar_style_set;
 
        /* Signals. */
@@ -152,14 +147,6 @@ sidebar_finalize (GObject *object)
        }
 }
 
-static void
-sidebar_destroy (GtkObject *object)
-{
-       if (GTK_OBJECT_CLASS (parent_class)->destroy) {
-               (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
-       }
-}
-
 static void
 sidebar_hls_to_rgb (gdouble *h,
                    gdouble *l,