diff --git a/library/Icinga/Data/Tree/NodeRenderer.php b/library/Icinga/Data/Tree/NodeRenderer.php
deleted file mode 100644
index 4cebb7e01..000000000
--- a/library/Icinga/Data/Tree/NodeRenderer.php
+++ /dev/null
@@ -1,58 +0,0 @@
-content[] = '
';
- }
-
- public function endIteration()
- {
- $this->content[] = '
';
- }
-
- public function beginChildren()
- {
- $this->content[] = '';
- }
-
- public function endChildren()
- {
- $this->content[] = '
';
- }
-
- public function render($callback)
- {
- if (! is_callable($callback)) {
- throw new RuntimeException('Callable expected');
- }
- foreach ($this as $node) {
- try {
- $content = call_user_func($callback, $node);
- } catch (Exception $e) {
- throw new RuntimeException($e);
- }
- $this->content[] = $content;
- }
- return implode("\n", $this->content);
- }
-}