fixed CS

Author: fabpot

Tests/DependencyInjection/FrameworkExtensionTest.php

@@ -23,7 +23,6 @@
 use Symfony\Component\Cache\Adapter\FilesystemAdapter;
 use Symfony\Component\Cache\Adapter\ProxyAdapter;
 use Symfony\Component\Cache\Adapter\RedisAdapter;
-use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
 use Symfony\Component\DependencyInjection\ChildDefinition;
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
 use Symfony\Component\DependencyInjection\ContainerBuilder;