[gtk/matthiasc/css-change-tracking-2] Remove an unused define

[Matthias Clasen <matthiasc src gnome org>]

commit 3fcbe8d5f30f5e6530f3baecb27e0a35992ceacb
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Jan 16 17:39:03 2020 -0500

    Remove an unused define
    
    We no longer use the GTK_CSS_CHANGE_RESERVED_BIT define.

 gtk/gtkcsstypesprivate.h | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/gtk/gtkcsstypesprivate.h b/gtk/gtkcsstypesprivate.h
index 719a743e0c..27e1d545f2 100644
--- a/gtk/gtkcsstypesprivate.h
+++ b/gtk/gtkcsstypesprivate.h
@@ -93,7 +93,6 @@ typedef struct _GtkCssStaticStyle GtkCssStaticStyle;
 #define GTK_CSS_CHANGE_TIMESTAMP                      (1ULL << 50)
 #define GTK_CSS_CHANGE_ANIMATIONS                     (1ULL << 51)
 
-#define GTK_CSS_CHANGE_RESERVED_BIT                   (1ULL << 62) /* Used internally in gtkcssselector.c */
 
 typedef guint64 GtkCssChange;