new cs rule: single_line_empty_body

Rule is added to the last version of php-cs-fixer

src/Bundle/ChillMainBundle/Security/Authorization/ChillVoterInterface.php

@@ -14,6 +14,4 @@ namespace Chill\MainBundle\Security\Authorization;
 /**
  * Provides methods for compiling voter and build admin role fields.
  */
-interface ChillVoterInterface
-{
-}
+interface ChillVoterInterface {}