Remove unused code

Author: jsor

Query/CachedExecutor.php

@@ -4,7 +4,6 @@
 
 use React\Dns\Model\Message;
 use React\Dns\Model\Record;
-use React\Promise\Deferred;
 use React\Promise\Util;
 
 class CachedExecutor implements ExecutorInterface
@@ -20,8 +19,6 @@ public function __construct(ExecutorInterface $executor, RecordCache $cache)
 
     public function query($nameserver, Query $query)
     {
-        $deferred = new Deferred();
-
         $cachedRecords = $this->cache->lookup($query);
 
         if (count($cachedRecords)) {

Query/Executor.php

@@ -8,7 +8,6 @@
 use React\Dns\Protocol\BinaryDumper;
 use React\EventLoop\LoopInterface;
 use React\Promise\Deferred;
-use React\Promise\Util;
 use React\Socket\Connection;
 
 class Executor implements ExecutorInterface

Query/RetryExecutor.php

@@ -2,8 +2,6 @@
 
 namespace React\Dns\Query;
 
-use React\Promise\Deferred;
-
 class RetryExecutor implements ExecutorInterface
 {
     private $executor;
@@ -38,7 +36,7 @@ public function tryQuery($nameserver, Query $query, $retries)
             }
             return $that->tryQuery($nameserver, $query, $retries-1);
         };
-        
+
         return $this->executor->query($nameserver, $query, $errorback)
                    ->then(null, $errorback);
     }