minor symfony#60613 [SecurityBundle] Remove AnonymousFactory leftovers (MatTheCat)

This PR was merged into the 6.4 branch.

Discussion
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[SecurityBundle] Remove `AnonymousFactory` leftovers

| Q             | A
| ------------- | ---
| Branch?       | 6.4
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Issues        | N/A
| License       | MIT

The `AnonymousFactory` was removed in symfony#41613 but the related configuration was still referenced in the `SecurityExtension`.

(Not sure about the target branch since this isn’t a bugfix.)

Commits
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0bd8eb2 [SecurityBundle] Remove `AnonymousFactory` leftovers

Author: nicolas-grekas

src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php

@@ -334,7 +334,7 @@ private function createFirewalls(array $config, ContainerBuilder $container): vo
                 $authenticators[$name] = ServiceLocatorTagPass::register($container, $firewallAuthenticatorRefs);
             }
             $contextId = 'security.firewall.map.context.'.$name;
-            $isLazy = !$firewall['stateless'] && (!empty($firewall['anonymous']['lazy']) || $firewall['lazy']);
+            $isLazy = !$firewall['stateless'] && $firewall['lazy'];
             $context = new ChildDefinition($isLazy ? 'security.firewall.lazy_context' : 'security.firewall.context');
             $context = $container->setDefinition($contextId, $context);
             $context
@@ -685,7 +685,7 @@ private function getUserProvider(ContainerBuilder $container, string $id, array
             return $this->createMissingUserProvider($container, $id, $factoryKey);
         }
 
-        if ('remember_me' === $factoryKey || 'anonymous' === $factoryKey || 'custom_authenticators' === $factoryKey) {
+        if ('remember_me' === $factoryKey || 'custom_authenticators' === $factoryKey) {
             if ('custom_authenticators' === $factoryKey) {
                 trigger_deprecation('symfony/security-bundle', '5.4', 'Not configuring explicitly the provider for the "%s" firewall is deprecated because it\'s ambiguous as there is more than one registered provider. Set the "provider" key to one of the configured providers, even if your custom authenticators don\'t use it.', $id);
             }