Promote multibulk response iterators as Predis response objects.

Multibulk response iterators will not be passed anymore to the response
parser method of the command that generated the response. Pipeline and
transaction abstractions still consume interators returned as response
items.

lib/Predis/Command/ZSetRange.php

@@ -11,8 +11,6 @@
 
 namespace Predis\Command;
 
-use Predis\Iterator\MultiBulkResponseTuple;
-
 /**
  * @link http://redis.io/commands/zrange
  * @author Daniele Alessandri <suppakilla@gmail.com>
@@ -90,10 +88,6 @@ class ZSetRange extends PrefixableCommand
     public function parseResponse($data)
     {
         if ($this->withScores()) {
-            if ($data instanceof \Iterator) {
-                return new MultiBulkResponseTuple($data);
-            }
-
             $result = array();
 
             for ($i = 0; $i < count($data); $i++) {