[evolution] Remove unused e_tree_model_node_traverse_preorder().

[Matthew Barnes <mbarnes src gnome org>]

commit 2ec5459b75d1e0e943e6f539f2d1b8e8e3fb6bc2
Author: Matthew Barnes <mbarnes redhat com>
Date:   Sat Jun 15 11:12:39 2013 -0400

    Remove unused e_tree_model_node_traverse_preorder().

 .../evolution-util/evolution-util-sections.txt     |    1 -
 e-util/e-tree-model.c                              |   35 --------------------
 e-util/e-tree-model.h                              |    5 ---
 3 files changed, 0 insertions(+), 41 deletions(-)
---
diff --git a/doc/reference/evolution-util/evolution-util-sections.txt 
b/doc/reference/evolution-util/evolution-util-sections.txt
index 7ed1d89..a1c0ed5 100644
--- a/doc/reference/evolution-util/evolution-util-sections.txt
+++ b/doc/reference/evolution-util/evolution-util-sections.txt
@@ -4367,7 +4367,6 @@ e_tree_model_value_is_empty
 e_tree_model_value_to_string
 ETreePathFunc
 e_tree_model_node_traverse
-e_tree_model_node_traverse_preorder
 e_tree_model_node_find
 e_tree_model_pre_change
 e_tree_model_no_change
diff --git a/e-util/e-tree-model.c b/e-util/e-tree-model.c
index 6431f88..c06fe07 100644
--- a/e-util/e-tree-model.c
+++ b/e-util/e-tree-model.c
@@ -962,41 +962,6 @@ e_tree_model_node_traverse (ETreeModel *tree_model,
        }
 }
 
-/**
- * e_tree_model_node_traverse_preorder:
- * @tree_model:
- * @path:
- * @func:
- * @data:
- *
- *
- **/
-void
-e_tree_model_node_traverse_preorder (ETreeModel *tree_model,
-                                     ETreePath path,
-                                     ETreePathFunc func,
-                                     gpointer data)
-{
-       ETreePath child;
-
-       g_return_if_fail (E_IS_TREE_MODEL (tree_model));
-       g_return_if_fail (path != NULL);
-
-       child = e_tree_model_node_get_first_child (tree_model, path);
-
-       while (child) {
-               ETreePath next_child;
-
-               if (func (tree_model, child, data))
-                       return;
-
-               next_child = e_tree_model_node_get_next (tree_model, child);
-               e_tree_model_node_traverse_preorder (tree_model, child, func, data);
-
-               child = next_child;
-       }
-}
-
 static ETreePath
 e_tree_model_node_real_traverse (ETreeModel *model,
                                  ETreePath path,
diff --git a/e-util/e-tree-model.h b/e-util/e-tree-model.h
index 1911f76..068b23f 100644
--- a/e-util/e-tree-model.h
+++ b/e-util/e-tree-model.h
@@ -243,11 +243,6 @@ void               e_tree_model_node_traverse      (ETreeModel *tree_model,
                                                 ETreePath path,
                                                 ETreePathFunc func,
                                                 gpointer data);
-void           e_tree_model_node_traverse_preorder
-                                               (ETreeModel *tree_model,
-                                                ETreePath path,
-                                                ETreePathFunc func,
-                                                gpointer data);
 ETreePath      e_tree_model_node_find          (ETreeModel *tree_model,
                                                 ETreePath path,
                                                 ETreePath end_path,