minor #19736 [FrameworkBundle][Security] Remove useless mocks (Ener-Getick)v2.7.17

This PR was merged into the 2.7 branch.

Discussion
----------

[FrameworkBundle][Security] Remove useless mocks

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

Removes mocks causing issues in https://github.com/symfony/symfony/pull/19734.

Commits
-------

fcd3345 [FrameworkBundle][Security] Remove useless mocks

1 files changed, 3 insertions, 2 deletions

diff --git a/Http/Tests/EntryPoint/FormAuthenticationEntryPointTest.php b/Http/Tests/EntryPoint/FormAuthenticationEntryPointTest.php
index 3acb9c2..75a6be4 100644
--- a/Http/Tests/EntryPoint/FormAuthenticationEntryPointTest.php
+++ b/Http/Tests/EntryPoint/FormAuthenticationEntryPointTest.php
@@ -11,6 +11,7 @@
 
 namespace Symfony\Component\Security\Http\Tests\EntryPoint;
 
+use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Security\Http\EntryPoint\FormAuthenticationEntryPoint;
 use Symfony\Component\HttpKernel\HttpKernelInterface;
 
@@ -19,7 +20,7 @@ class FormAuthenticationEntryPointTest extends \PHPUnit_Framework_TestCase
     public function testStart()
     {
         $request = $this->getMock('Symfony\Component\HttpFoundation\Request', array(), array(), '', false, false);
-        $response = $this->getMock('Symfony\Component\HttpFoundation\Response');
+        $response = new Response();
 
         $httpKernel = $this->getMock('Symfony\Component\HttpKernel\HttpKernelInterface');
         $httpUtils = $this->getMock('Symfony\Component\Security\Http\HttpUtils');
@@ -39,7 +40,7 @@ class FormAuthenticationEntryPointTest extends \PHPUnit_Framework_TestCase
     {
         $request = $this->getMock('Symfony\Component\HttpFoundation\Request', array(), array(), '', false, false);
         $subRequest = $this->getMock('Symfony\Component\HttpFoundation\Request', array(), array(), '', false, false);
-        $response = new \Symfony\Component\HttpFoundation\Response('', 200);
+        $response = new Response('', 200);
 
         $httpUtils = $this->getMock('Symfony\Component\Security\Http\HttpUtils');
         $httpUtils