[evolution-data-server] Remove collection_backend_children_contains().

[Matthew Barnes <mbarnes src gnome org>]

commit c204ff1cdff9603242dd5faab425be3f4d6f41a4
Author: Matthew Barnes <mbarnes redhat com>
Date:   Thu Aug 2 14:58:49 2012 -0400

    Remove collection_backend_children_contains().
    
    Decided I don't need this for the moment, so removing it to silence an
    "unused-function" compiler warning.

 libebackend/e-collection-backend.c |   15 ---------------
 1 files changed, 0 insertions(+), 15 deletions(-)
---
diff --git a/libebackend/e-collection-backend.c b/libebackend/e-collection-backend.c
index 46bbe51..8a1cbda 100644
--- a/libebackend/e-collection-backend.c
+++ b/libebackend/e-collection-backend.c
@@ -111,21 +111,6 @@ collection_backend_children_remove (ECollectionBackend *backend,
 	return removed;
 }
 
-static gboolean
-collection_backend_children_contains (ECollectionBackend *backend,
-                                      ESource *source)
-{
-	gboolean contains;
-
-	g_mutex_lock (backend->priv->children_lock);
-
-	contains = g_hash_table_contains (backend->priv->children, source);
-
-	g_mutex_unlock (backend->priv->children_lock);
-
-	return contains;
-}
-
 static GList *
 collection_backend_children_list (ECollectionBackend *backend)
 {