SCA: dropped unused mocks, duplicate import and a function alias usage

Author: kalessil

Tests/Firewall/BasicAuthenticationListenerTest.php

@@ -74,8 +74,6 @@ public function testHandleWhenAuthenticationFails()
             'PHP_AUTH_PW' => 'ThePassword',
         ]);
 
-        $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
-
         $tokenStorage = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface')->getMock();
         $tokenStorage
             ->expects($this->any())

Tests/RememberMe/AbstractRememberMeServicesTest.php

@@ -124,7 +124,6 @@ public function testLoginSuccessIsNotProcessedWhenTokenDoesNotContainUserInterfa
         $service = $this->getService(null, ['name' => 'foo', 'always_remember_me' => true, 'path' => null, 'domain' => null]);
         $request = new Request();
         $response = new Response();
-        $account = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
         $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
         $token
             ->expects($this->once())