[Security] Remove everything related to the deprecated authentication manager

Author: wouterj

Authentication/AuthenticationManagerInterface.php

@@ -11,7 +11,6 @@
 
 namespace Symfony\Component\Security\Core\Authentication;
 
-use Symfony\Component\Security\Core\Authentication\Token\AnonymousToken;
 use Symfony\Component\Security\Core\Authentication\Token\NullToken;
 use Symfony\Component\Security\Core\Authentication\Token\RememberMeToken;
 use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
@@ -25,25 +24,7 @@ class AuthenticationTrustResolver implements AuthenticationTrustResolverInterfac
 {
     public function isAuthenticated(TokenInterface $token = null): bool
     {
-        return null !== $token && !$token instanceof NullToken
-            // @deprecated since Symfony 5.4, TokenInterface::isAuthenticated() and AnonymousToken no longer exists in 6.0
-            && !$token instanceof AnonymousToken && $token->isAuthenticated(false);
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function isAnonymous(TokenInterface $token = null/*, $deprecation = true*/)
-    {
-        if (1 === \func_num_args() || false !== func_get_arg(1)) {
-            trigger_deprecation('symfony/security-core', '5.4', 'The "%s()" method is deprecated, use "isAuthenticated()" or "isFullFledged()" if you want to check if the request is (fully) authenticated.', __METHOD__);
-        }
-
-        if (null === $token) {
-            return false;
-        }
-
-        return $token instanceof AnonymousToken || $token instanceof NullToken;
+        return null !== $token && !$token instanceof NullToken;
     }
 
     /**
@@ -63,10 +44,10 @@ public function isRememberMe(TokenInterface $token = null)
      */
     public function isFullFledged(TokenInterface $token = null)
     {
-        if (null === $token) {
+        if (null === $token || $token instanceof NullToken) {
             return false;
         }
 
-        return !$this->isAnonymous($token, false) && !$this->isRememberMe($token);
+        return !$this->isRememberMe($token);
     }
 }

Authentication/AuthenticationProviderManager.php

@@ -22,18 +22,6 @@
  */
 interface AuthenticationTrustResolverInterface
 {
-    /**
-     * Resolves whether the passed token implementation is authenticated
-     * anonymously.
-     *
-     * If null is passed, the method must return false.
-     *
-     * @return bool
-     *
-     * @deprecated since Symfony 5.4, use !isAuthenticated() instead
-     */
-    public function isAnonymous(TokenInterface $token = null);
-
     /**
      * Resolves whether the passed token implementation is authenticated
      * using remember-me capabilities.