[gtk/matthiasc/for-master: 6/16] Drop gtk_render_slider from headers

[Matthias Clasen <matthiasc src gnome org>]

commit 2b5b6e088567871e20ae24827da4a30197a4e8ff
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Sep 13 21:47:39 2020 -0400

    Drop gtk_render_slider from headers
    
    The function does not exist.

 gtk/gtkrender.h | 8 --------
 1 file changed, 8 deletions(-)
---
diff --git a/gtk/gtkrender.h b/gtk/gtkrender.h
index 7e4b0b5f15..2d70770ece 100644
--- a/gtk/gtkrender.h
+++ b/gtk/gtkrender.h
@@ -95,14 +95,6 @@ void        gtk_render_line        (GtkStyleContext     *context,
                                     double               x1,
                                     double               y1);
 GDK_AVAILABLE_IN_ALL
-void        gtk_render_slider      (GtkStyleContext     *context,
-                                    cairo_t             *cr,
-                                    double               x,
-                                    double               y,
-                                    double               width,
-                                    double               height,
-                                    GtkOrientation       orientation);
-GDK_AVAILABLE_IN_ALL
 void        gtk_render_handle      (GtkStyleContext     *context,
                                     cairo_t             *cr,
                                     double               x,