[gnome-backgrounds] build: Remove non-existent background

[Piotr Drąg <piotrdrag src gnome org>]

commit 4cd4bddeb12c61b167f6031b28b8e29c17a6485e
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sat Jan 6 14:23:32 2018 +0100

    build: Remove non-existent background

 backgrounds/meson.build |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/backgrounds/meson.build b/backgrounds/meson.build
index 7380130..55b3e9a 100644
--- a/backgrounds/meson.build
+++ b/backgrounds/meson.build
@@ -21,7 +21,6 @@ backgrounds = [
   'Icescape.jpg',
   'Road.jpg',
   'Sandstone.jpg',
-  'Stones.jpg',
   'SeaSunset.jpg',
   'symbolics-1.jpg',
   'symbolics-2.jpg',