[Bundles] remove docs for the annotation compilation feature

bundles/extension.rst

@@ -169,40 +169,3 @@ Using Configuration to Change the Services
 The Extension is also the class that handles the configuration for that
 particular bundle (e.g. the configuration in ``config/packages/<bundle_alias>.yaml``).
 To read more about it, see the ":doc:`/bundles/configuration`" article.
-
-Adding Classes to Compile
--------------------------
-
-Bundles can hint Symfony about which of their classes contain annotations so
-they are compiled when generating the application cache to improve the overall
-performance. Define the list of annotated classes to compile in the
-``addAnnotatedClassesToCompile()`` method::
-
-    public function load(array $configs, ContainerBuilder $container): void
-    {
-        // ...
-
-        $this->addAnnotatedClassesToCompile([
-            // you can define the fully qualified class names...
-            'Acme\\BlogBundle\\Controller\\AuthorController',
-            // ... but glob patterns are also supported:
-            'Acme\\BlogBundle\\Form\\**',
-
-            // ...
-        ]);
-    }
-
-.. note::
-
-    If some class extends from other classes, all its parents are automatically
-    included in the list of classes to compile.
-
-Patterns are transformed into the actual class namespaces using the classmap
-generated by Composer. Therefore, before using these patterns, you must generate
-the full classmap executing the ``dump-autoload`` command of Composer.
-
-.. warning::
-
-    This technique can't be used when the classes to compile use the ``__DIR__``
-    or ``__FILE__`` constants, because their values will change when loading
-    these classes from the ``classes.php`` file.