diff --git a/extensions/jui/Slider.php b/extensions/jui/Slider.php
deleted file mode 100644
index c19f2db..0000000
--- a/extensions/jui/Slider.php
+++ /dev/null
@@ -1,68 +0,0 @@
-<?php
-/**
- * @link http://www.yiiframework.com/
- * @copyright Copyright (c) 2008 Yii Software LLC
- * @license http://www.yiiframework.com/license/
- */
-
-namespace yii\jui;
-
-use Yii;
-use yii\helpers\Html;
-
-/**
- * Slider renders a slider jQuery UI widget.
- *
- * For example:
- *
- * ```php
- * echo Slider::widget([
- *     'model' => $model,
- *     'attribute' => 'amount',
- *     'clientOptions' => [
- *         'min' => 1,
- *         'max' => 10,
- *     ],
- * ]);
- * ```
- *
- * The following example will use the name property instead:
- *
- * ```php
- * echo Slider::widget([
- *     'name'  => 'amount',
- *     'clientOptions' => [
- *         'min' => 1,
- *         'max' => 10,
- *     ],
- * ]);
- *```
- *
- * @see http://api.jqueryui.com/slider/
- * @author Alexander Makarov <sam@rmcreative.ru>
- * @since 2.0
- */
-class Slider extends InputWidget
-{
-	/**
-	 * Renders the widget.
-	 */
-	public function run()
-	{
-		echo $this->renderWidget();
-		$this->registerWidget('slider', SliderAsset::className());
-	}
-
-	/**
-	 * Renders the Slider widget.
-	 * @return string the rendering result.
-	 */
-	public function renderWidget()
-	{
-		if ($this->hasModel()) {
-			return Html::activeTextInput($this->model, $this->attribute, $this->options);
-		} else {
-			return Html::textInput($this->name, $this->value, $this->options);
-		}
-	}
-}