Fix php_cs_fixer warnings and removed one unit test

Author: covex-nn

DependencyInjection/Configuration.php

@@ -39,7 +39,7 @@ public function getConfigTreeBuilder()
         $rootNode
             ->children()
                 ->scalarNode('db_driver')
-                    ->defaultValue("no_driver")
+                    ->defaultValue('no_driver')
                     ->validate()
                         ->ifNotInArray($supportedDrivers)
                         ->thenInvalid('The driver %s is not supported. Please choose one of '.json_encode($supportedDrivers))

Model/GroupManagerNone.php

@@ -12,7 +12,7 @@
 namespace FOS\UserBundle\Model;
 
 /**
- * Fallback Group Manager implementation when db_driver is not configured
+ * Fallback Group Manager implementation when db_driver is not configured.
  *
  * @author Andrey F. Mindubaev <andrey@mindubaev.ru>
  */

Model/UserManagerNone.php

@@ -12,7 +12,7 @@
 namespace FOS\UserBundle\Model;
 
 /**
- * Fallback User Manager implementation when db_driver is not configured
+ * Fallback User Manager implementation when db_driver is not configured.
  *
  * @author Andrey F. Mindubaev <andrey@mindubaev.ru>
  */

Tests/DependencyInjection/FOSUserExtensionTest.php

@@ -26,17 +26,6 @@ protected function tearDown()
         unset($this->configuration);
     }
 
-    /**
-     * @expectedException \Symfony\Component\Config\Definition\Exception\InvalidConfigurationException
-     */
-    public function testUserLoadThrowsExceptionUnlessDatabaseDriverSet()
-    {
-        $loader = new FOSUserExtension();
-        $config = $this->getEmptyConfig();
-        unset($config['db_driver']);
-        $loader->load(array($config), new ContainerBuilder());
-    }
-
     /**
      * @expectedException \Symfony\Component\Config\Definition\Exception\InvalidConfigurationException
      */