[gtk+] GtkColorEditor: Stop using deprecated API

[Matthias Clasen <matthiasc src gnome org>]

commit d26c8e0536686af3b056b23eb504e28900cc5744
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Oct 2 00:11:02 2014 -0400

    GtkColorEditor: Stop using deprecated API
    
    This call was not needed at all.

 gtk/gtkcoloreditor.c |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)
---
diff --git a/gtk/gtkcoloreditor.c b/gtk/gtkcoloreditor.c
index c647b8c..c202750 100644
--- a/gtk/gtkcoloreditor.c
+++ b/gtk/gtkcoloreditor.c
@@ -345,8 +345,6 @@ popup_draw (GtkWidget      *popup,
 static void
 gtk_color_editor_init (GtkColorEditor *editor)
 {
-  GdkRGBA transparent = { 0, 0, 0, 0 };
-
   editor->priv = gtk_color_editor_get_instance_private (editor);
   editor->priv->use_alpha = TRUE;
 
@@ -370,8 +368,6 @@ gtk_color_editor_init (GtkColorEditor *editor)
     gtk_style_context_add_class (gtk_widget_get_style_context (editor->priv->h_slider),
                                  GTK_STYLE_CLASS_SCALE_HAS_MARKS_BELOW);
 
-  gtk_widget_override_background_color (editor->priv->overlay, 0, &transparent);
-
   /* Create the scaled popup adjustments manually here because connecting user data is not
    * supported by template GtkBuilder xml (it would be possible to set this up in the xml
    * but require 4 separate callbacks and would be rather ugly).