[mutter] backends/stage: Remove unused function declaration

[Jonas Ådahl <jadahl src gnome org>]

commit 9adf8826d2366bba332c6b08b14d85ffe8f5e87c
Author: Jonas Ådahl <jadahl gmail com>
Date:   Thu Jul 12 15:01:10 2018 +0200

    backends/stage: Remove unused function declaration
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/170

 src/backends/meta-stage-private.h | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/src/backends/meta-stage-private.h b/src/backends/meta-stage-private.h
index 33603effe..21feab3ac 100644
--- a/src/backends/meta-stage-private.h
+++ b/src/backends/meta-stage-private.h
@@ -42,8 +42,6 @@ void              meta_stage_update_cursor_overlay   (MetaStage   *stage,
 void meta_stage_set_active (MetaStage *stage,
                             gboolean   is_active);
 
-void meta_stage_update_view_layout (MetaStage *stage);
-
 G_END_DECLS
 
 #endif /* META_STAGE_PRIVATE_H */