diff --git a/core/lib/Drupal/Core/DependencyInjection/Compiler/DeprecatedServicePass.php b/core/lib/Drupal/Core/DependencyInjection/Compiler/DeprecatedServicePass.php
index 7f1759d8ce..faed8b7d96 100644
--- a/core/lib/Drupal/Core/DependencyInjection/Compiler/DeprecatedServicePass.php
+++ b/core/lib/Drupal/Core/DependencyInjection/Compiler/DeprecatedServicePass.php
@@ -19,26 +19,12 @@ public function process(ContainerBuilder $container) {
     $deprecated_services = [];
     foreach ($container->getDefinitions() as $service_id => $definition) {
       if ($definition->isDeprecated()) {
-        // @todo: remove when Drupal requires Symfony 5. See
-        // https://www.drupal.org/project/drupal/issues/3197729
-        if (method_exists($definition, 'getDeprecation')) {
-          $deprecated_services[$service_id] = $definition->getDeprecation($service_id)['message'];
-        }
-        else {
-          $deprecated_services[$service_id] = $definition->getDeprecationMessage($service_id);
-        }
+        $deprecated_services[$service_id] = $definition->getDeprecation($service_id)['message'];
       }
     }
     foreach ($container->getAliases() as $service_id => $definition) {
       if ($definition->isDeprecated()) {
-        // @todo: remove when Drupal requires Symfony 5. See
-        // https://www.drupal.org/project/drupal/issues/3197729
-        if (method_exists($definition, 'getDeprecation')) {
-          $deprecated_services[$service_id] = $definition->getDeprecation($service_id)['message'];
-        }
-        else {
-          $deprecated_services[$service_id] = $definition->getDeprecationMessage($service_id);
-        }
+        $deprecated_services[$service_id] = $definition->getDeprecation($service_id)['message'];
       }
     }
     $container->setParameter('_deprecated_service_list', $deprecated_services);