diff --git a/Classes/PHPExcel/CalcEngine/CyclicReferenceStack.new.php b/Classes/PHPExcel/CalcEngine/CyclicReferenceStack.new.php
deleted file mode 100644
index e57512d..0000000
--- a/Classes/PHPExcel/CalcEngine/CyclicReferenceStack.new.php
+++ /dev/null
@@ -1,122 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2014 PHPExcel
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * @category   PHPExcel
- * @package    PHPExcel_Calculation
- * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version	##VERSION##, ##DATE##
- */
-
-
-/**
- * PHPExcel_CalcEngine_CyclicReferenceStack
- *
- * @category	PHPExcel_CalcEngine_CyclicReferenceStack
- * @package		PHPExcel_Calculation
- * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CalcEngine_CyclicReferenceStack {
-
-	/**
-	 *  The call stack for calculated cells
-	 *
-	 *  @var mixed[]
-	 */
-	private $_stack = array();
-
-    private $_values = array();
-
-
-	/**
-	 * Return the number of entries on the stack
-	 *
-	 * @return  integer
-	 */
-	public function count() {
-		return count($this->_stack);
-	}
-
-	/**
-	 * Push a new entry onto the stack
-	 *
-	 * @param  mixed  $value
-	 */
-	public function push($value) {
-		$this->_stack[] = $value;
-	}	//	function push()
-
-	/**
-	 * Pop the last entry from the stack
-	 *
-	 * @return  mixed
-	 */
-	public function pop() {
-		return array_pop($this->_stack);
-	}	//	function pop()
-
-	/**
-	 * Test to see if a specified entry exists on the stack
-	 *
-	 * @param  mixed  $value  The value to test
-	 */
-	public function onStack($value) {
-		return in_array($value, $this->_stack);
-	}
-
-	/**
-	 * Clear the stack
-	 */
-	public function clear() {
-		$this->_stack = array();
-	}	//	function push()
-
-	/**
-	 * Return an array of all entries on the stack
-	 *
-	 * @return  mixed[]
-	 */
-	public function showStack() {
-		return $this->_stack;
-	}
-
-    public function setValueByKey($key, $value) {
-        $this->_values[$key] = $value;
-    }
-
-    public function getValueByKey($key, &$value) {
-        if (isset($this->_values[$key])) {
-            $value = $this->_values[$key];
-            return true;
-        }
-        return false;
-    }
-
-    public function removeValueByKey($key) {
-        if (isset($this->_values[$key])) {
-            unset($this->_values[$key]);
-        }
-    }
-
-    public function showValues() {
-        return $this->_values;
-    }
-
-}	//	class PHPExcel_CalcEngine_CyclicReferenceStack