diff --git a/src/Utilities/Arrays.php b/src/Utilities/Arrays.php
index c01a9d8..cb254f8 100644
--- a/src/Utilities/Arrays.php
+++ b/src/Utilities/Arrays.php
@@ -48,23 +48,6 @@ class Arrays
 
                 if (is_array($value)) {
                     $effect .= self::values2string($value, $arrayColumnKey, $separator);
-                    /*
-                     * Previous version. Doesn't work with array containing arrays, e.g.:
-                     * array(
-                     *      1 => array(
-                     *          'item1',
-                     *          'item2'
-                     *      ),
-                     *      2 => array(
-                     *          'item3',
-                     *          'item4'
-                     *      )
-                     * )
-                     *
-                      if(isset($value[$arrayColumnKey])){
-                      $effect .= $value[$arrayColumnKey];
-                      }
-                     */
                 } else {
                     if (empty($arrayColumnKey)) {
                         $effect .= $value;