[gtk+/composite-templates] Drop GSimpleActionObserver

[Juan Pablo Ugarte <jpu src gnome org>]

commit 6180593e02df0bb7d248b27161b70c4a84b06661
Author: Ryan Lortie <desrt desrt ca>
Date:   Fri Aug 17 23:28:08 2012 -0400

    Drop GSimpleActionObserver
    
    The only place that this was being created was in GtkApplicationWindow
    and the last commit dropped that code.

 gtk/Makefile.am             |    2 -
 gtk/gsimpleactionobserver.c |  286 -------------------------------------------
 gtk/gsimpleactionobserver.h |   51 --------
 3 files changed, 0 insertions(+), 339 deletions(-)
---
diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index 06a7d7b..106a47f 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -401,7 +401,6 @@ gtk_private_type_h_sources = \
 # GTK+ header files that don't get installed
 gtk_private_h_sources =		\
 	gactionmuxer.h		\
-	gsimpleactionobserver.h	\
 	gactionobserver.h	\
 	gactionobservable.h	\
 	gtkapplicationprivate.h	\
@@ -572,7 +571,6 @@ deprecated_c_sources = 			\
 gtk_base_c_sources = 		\
 	$(deprecated_c_sources)	\
 	gactionmuxer.c		\
-	gsimpleactionobserver.c	\
 	gactionobserver.c	\
 	gactionobservable.c	\
 	gtkactionable.c		\