removed duplicate use statement

Author: fabpot

src/Symfony/Component/Console/Application.php

@@ -32,7 +32,6 @@
 use Symfony\Component\Console\Command\HelpCommand;
 use Symfony\Component\Console\Command\ListCommand;
 use Symfony\Component\Console\Helper\HelperSet;
-use Symfony\Component\Console\Helper\Helper;
 use Symfony\Component\Console\Helper\FormatterHelper;
 use Symfony\Component\Console\Event\ConsoleCommandEvent;
 use Symfony\Component\Console\Event\ConsoleErrorEvent;