Fix description of the queue-delete command (vyuldashev#366)

Looks like it was copy/pasted from the queue-declare command.

Author: omnicolor

src/Console/QueueDeleteCommand.php

@@ -14,7 +14,7 @@ class QueueDeleteCommand extends Command
                            {--unused=0 : Check if queue has no consumers}
                            {--empty=0 : Check if queue is empty}';
 
-    protected $description = 'Declare queue';
+    protected $description = 'Delete queue';
 
     /**
      * @param RabbitMQConnector $connector