[gtk+] Drop no-longer-existing header from Makefile

[Matthias Clasen <matthiasc src gnome org>]

commit fcbfa053477812956d58b2cadc6cfd430ccd55dd
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Dec 21 17:36:50 2010 -0500

    Drop no-longer-existing header from Makefile

 gdk/Makefile.am |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/gdk/Makefile.am b/gdk/Makefile.am
index 8841f80..684df0a 100644
--- a/gdk/Makefile.am
+++ b/gdk/Makefile.am
@@ -106,8 +106,7 @@ gdk_private_headers = 				\
 	gdkinternals.h				\
 	gdkintl.h				\
 	gdkkeysprivate.h			\
-	gdkvisualprivate.h			\
-	gdkpoly-generic.h
+	gdkvisualprivate.h
 
 gdk_c_sources = 				\
 	gdk.c					\