diff --git a/library/Businessprocess/Html/Container.php b/library/Businessprocess/Html/Container.php
index 6aaba22..f838721 100644
--- a/library/Businessprocess/Html/Container.php
+++ b/library/Businessprocess/Html/Container.php
@@ -38,51 +38,3 @@ class Container extends BaseElement
         return $container;
     }
 }
-
-class Old {
-
-    /**
-     * @inheritdoc
-     */
-    public function render()
-    {
-        return $this->renderContainerFor(parent::render());
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function renderError($error)
-    {
-        // TODO: eventually add class="error"
-        return $this->renderContainerFor(
-            parent::renderError($error)
-        );
-    }
-
-    /**
-     * @param bool $render
-     * @return $this
-     */
-    public function renderIfEmpty($render = true)
-    {
-        $this->renderIfEmpty = $render;
-        return $this;
-    }
-
-    /**
-     * @param string $content
-     * @return string
-     */
-    protected function renderContainerFor($content)
-    {
-        return sprintf(
-            '<%s%s>%s</%s>',
-            $this->tag,
-            $this->attributes->render(),
-            $content,
-            $this->tag
-        );
-    }
-
-}
\ No newline at end of file