Update tests.rst

Author: ifdattic

best_practices/tests.rst

@@ -31,7 +31,6 @@ A functional test can be as easy as this:
 .. code-block:: php
 
     // src/AppBundle/Tests/ApplicationAvailabilityFunctionalTest.php
-
     namespace AppBundle\Tests;
 
     use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;