[gnome-desktop] gnome-bg: drop unused APIs

[Ray Strode <halfline src gnome org>]

commit 786336cc7cfaa8e4a0acafe5b9868950e538b740
Author: Ray Strode <rstrode redhat com>
Date:   Fri Oct 31 15:09:51 2014 -0400

    gnome-bg: drop unused APIs
    
    They aren't used, and don't work on wayland systems anyway.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=739463

 libgnome-desktop/Makefile.am          |    4 -
 libgnome-desktop/gnome-bg-crossfade.c |  575 -------
 libgnome-desktop/gnome-bg-crossfade.h |   74 -
 libgnome-desktop/gnome-bg.c           | 2689 ---------------------------------
 libgnome-desktop/gnome-bg.h           |  121 --
 5 files changed, 0 insertions(+), 3463 deletions(-)
---
diff --git a/libgnome-desktop/Makefile.am b/libgnome-desktop/Makefile.am
index 2389eb1..dceda3d 100644
--- a/libgnome-desktop/Makefile.am
+++ b/libgnome-desktop/Makefile.am
@@ -32,9 +32,7 @@ endif
 introspection_sources =                \
        gnome-desktop-thumbnail.c       \
        gnome-thumbnail-pixbuf-utils.c  \
-       gnome-bg.c                      \
        gnome-bg-slide-show.c           \
-       gnome-bg-crossfade.c            \
        gnome-rr.c                      \
        gnome-rr-config.c               \
        gnome-rr-output-info.c          \
@@ -98,8 +96,6 @@ pkgconfig_DATA = gnome-desktop-3.0.pc
 
 libgnome_desktopdir = $(includedir)/gnome-desktop-3.0/libgnome-desktop
 libgnome_desktop_HEADERS = \
-        gnome-bg.h                      \
-        gnome-bg-crossfade.h            \
        gnome-bg-slide-show.h           \
         gnome-desktop-thumbnail.h       \
         gnome-rr.h                      \