[gnome-builder/wip/extensions] slider: track gtk deprecations

[Christian Hergert <chergert src gnome org>]

commit 2ee63543cb7d12cdd18996023e01d18e9e5f05d9
Author: Christian Hergert <christian hergert me>
Date:   Mon Jul 6 13:17:44 2015 -0700

    slider: track gtk deprecations

 src/workspace/gb-slider.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/src/workspace/gb-slider.c b/src/workspace/gb-slider.c
index 2506493..1dc2d1f 100644
--- a/src/workspace/gb-slider.c
+++ b/src/workspace/gb-slider.c
@@ -245,7 +245,6 @@ gb_slider_create_child_window (GbSlider      *self,
 
   window = gdk_window_new (gtk_widget_get_window (widget), &attributes, attributes_mask);
   gtk_widget_register_window (widget, window);
-  gtk_style_context_set_background (gtk_widget_get_style_context (widget), window);
 
   gtk_widget_set_parent_window (child->widget, window);