Removed dependency with monkey-patched rubytree.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@8214 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/lib/redmine/menu_manager/menu_item_test.rb

@@ -114,7 +114,7 @@ class Redmine::MenuManager::MenuItemTest < ActiveSupport::TestCase
 
   def test_has_children
     parent_item = get_menu_item(:test_menu, :parent)
-    assert parent_item.hasChildren?
+    assert parent_item.children.present?
     assert_equal 2, parent_item.children.size
     assert_equal get_menu_item(:test_menu, :child_menu), parent_item.children[0]
     assert_equal get_menu_item(:test_menu, :child2_menu), parent_item.children[1]