Remove Password::$defaultCallback from ValidationEnumRuleTest (#44994)

Author: michaelnabil230

tests/Validation/ValidationEnumRuleTest.php

@@ -7,7 +7,6 @@
 use Illuminate\Translation\ArrayLoader;
 use Illuminate\Translation\Translator;
 use Illuminate\Validation\Rules\Enum;
-use Illuminate\Validation\Rules\Password;
 use Illuminate\Validation\ValidationServiceProvider;
 use Illuminate\Validation\Validator;
 use PHPUnit\Framework\TestCase;
@@ -184,7 +183,5 @@ protected function tearDown(): void
         Facade::clearResolvedInstances();
 
         Facade::setFacadeApplication(null);
-
-        Password::$defaultCallback = null;
     }
 }