[mutter] backend: Remove unused freeze/thaw functions

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit e3c332fa10892b72d6869c7fe99e11c41d0d98c6
Author: Jonas Ådahl <jadahl gmail com>
Date:   Tue May 26 22:17:46 2020 +0200

    backend: Remove unused freeze/thaw functions
    
    They are no longer used, so remove them.
    
    https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1289

 src/backends/meta-backend-private.h |  4 ----
 src/backends/meta-backend.c         | 18 ------------------
 2 files changed, 22 deletions(-)
---
diff --git a/src/backends/meta-backend-private.h b/src/backends/meta-backend-private.h
index 5b0c849ec7..f93b5760a4 100644
--- a/src/backends/meta-backend-private.h
+++ b/src/backends/meta-backend-private.h
@@ -156,10 +156,6 @@ xkb_layout_index_t meta_backend_get_keymap_layout_group (MetaBackend *backend);
 
 gboolean meta_backend_is_lid_closed (MetaBackend *backend);
 
-void meta_backend_freeze_updates (MetaBackend *backend);
-
-void meta_backend_thaw_updates (MetaBackend *backend);
-
 void meta_backend_update_last_device (MetaBackend        *backend,
                                       ClutterInputDevice *device);
 
diff --git a/src/backends/meta-backend.c b/src/backends/meta-backend.c
index 0a795e3a6d..39f2754896 100644
--- a/src/backends/meta-backend.c
+++ b/src/backends/meta-backend.c
@@ -1268,24 +1268,6 @@ meta_backend_get_stage (MetaBackend *backend)
   return priv->stage;
 }
 
-void
-meta_backend_freeze_updates (MetaBackend *backend)
-{
-  ClutterStage *stage;
-
-  stage = CLUTTER_STAGE (meta_backend_get_stage (backend));
-  clutter_stage_freeze_updates (stage);
-}
-
-void
-meta_backend_thaw_updates (MetaBackend *backend)
-{
-  ClutterStage *stage;
-
-  stage = CLUTTER_STAGE (meta_backend_get_stage (backend));
-  clutter_stage_thaw_updates (stage);
-}
-
 static gboolean
 update_last_device (MetaBackend *backend)
 {