[gtk/fix-icontheme-invalidation] Remove an unused include

[Matthias Clasen <matthiasc src gnome org>]

commit 49dc0843c43030ba4449cc16fa2faf1fd2a246b0
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Apr 21 14:27:15 2020 -0400

    Remove an unused include

 gtk/gtkcellrendererspinner.c | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/gtk/gtkcellrendererspinner.c b/gtk/gtkcellrendererspinner.c
index 3ac622ccc4..ebb430d6e8 100644
--- a/gtk/gtkcellrendererspinner.c
+++ b/gtk/gtkcellrendererspinner.c
@@ -28,7 +28,6 @@
 #include "config.h"
 
 #include "gtkcellrendererspinner.h"
-#include "gtkiconhelperprivate.h"
 #include "gtkintl.h"
 #include "gtksettings.h"
 #include "gtksnapshot.h"