[gtk] button: Remove some unnecessary includes

[Timm Bäder <baedert src gnome org>]

commit 4860410c4a8c4e04bdeb4f6b82ea65fb96619d7f
Author: Timm Bäder <mail baedert org>
Date:   Mon Dec 3 18:54:25 2018 +0100

    button: Remove some unnecessary includes

 gtk/gtkbutton.c | 4 ----
 1 file changed, 4 deletions(-)
---
diff --git a/gtk/gtkbutton.c b/gtk/gtkbutton.c
index 17dd5259df..0534814df7 100644
--- a/gtk/gtkbutton.c
+++ b/gtk/gtkbutton.c
@@ -56,8 +56,6 @@
 #include "gtkbuttonprivate.h"
 
 #include "gtkactionhelperprivate.h"
-#include "gtkapplicationprivate.h"
-#include "gtkbox.h"
 #include "gtkcheckbutton.h"
 #include "gtkcontainerprivate.h"
 #include "gtkgesturemultipress.h"
@@ -68,9 +66,7 @@
 #include "gtkmain.h"
 #include "gtkmarshalers.h"
 #include "gtkprivate.h"
-#include "gtksizerequest.h"
 #include "gtktypebuiltins.h"
-#include "gtkwidgetprivate.h"
 
 #include "a11y/gtkbuttonaccessible.h"