Clean useless deprecation silencing

Author: nicolas-grekas

Tests/AbstractLayoutTest.php

@@ -127,8 +127,6 @@ abstract protected function setTheme(FormView $view, array $themes);
      */
     public function testLegacyEnctype()
     {
-        $this->iniSet('error_reporting', -1 & ~E_USER_DEPRECATED);
-
         $form = $this->factory->createNamedBuilder('name', 'form')
             ->add('file', 'file')
             ->getForm();
@@ -141,8 +139,6 @@ public function testLegacyEnctype()
      */
     public function testLegacyNoEnctype()
     {
-        $this->iniSet('error_reporting', -1 & ~E_USER_DEPRECATED);
-
         $form = $this->factory->createNamedBuilder('name', 'form')
             ->add('text', 'text')
             ->getForm();

Tests/Extension/Csrf/CsrfProvider/DefaultCsrfProviderTest.php

@@ -25,7 +25,6 @@ public static function setUpBeforeClass()
     {
         ini_set('session.save_handler', 'files');
         ini_set('session.save_path', sys_get_temp_dir());
-        ini_set('error_reporting', -1 & ~E_USER_DEPRECATED);
     }
 
     protected function setUp()

Tests/Extension/HttpFoundation/EventListener/LegacyBindRequestListenerTest.php

@@ -37,8 +37,6 @@ class LegacyBindRequestListenerTest extends \PHPUnit_Framework_TestCase
 
     protected function setUp()
     {
-        $this->iniSet('error_reporting', -1 & ~E_USER_DEPRECATED);
-
         $path = tempnam(sys_get_temp_dir(), 'sf2');
         touch($path);