minor #18634 Remove some unused use (alamirault)

This PR was merged into the 5.4 branch.

Discussion
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Remove some unused use

Found when working on #18633

Commits
-------

546fc2f Remove some unused use

Author: javiereguiluz

components/event_dispatcher.rst

@@ -182,7 +182,6 @@ determine which instance is passed.
 
         use Symfony\Component\DependencyInjection\ContainerBuilder;
         use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
-        use Symfony\Component\DependencyInjection\Reference;
         use Symfony\Component\EventDispatcher\DependencyInjection\RegisterListenersPass;
         use Symfony\Component\EventDispatcher\EventDispatcher;
 
@@ -213,7 +212,6 @@ determine which instance is passed.
         use Symfony\Component\DependencyInjection\Compiler\PassConfig;
         use Symfony\Component\DependencyInjection\ContainerBuilder;
         use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
-        use Symfony\Component\DependencyInjection\Reference;
         use Symfony\Component\EventDispatcher\DependencyInjection\AddEventAliasesPass;
         use Symfony\Component\EventDispatcher\DependencyInjection\RegisterListenersPass;
         use Symfony\Component\EventDispatcher\EventDispatcher;

configuration.rst

@@ -846,7 +846,7 @@ In PHP >= 8, you can remove the two arguments when autoconfiguration is enabled
     # config/services.yaml
     services:
         Symfony\Component\Dotenv\Command\DotenvDumpCommand: ~
-        
+
 Then, run the command:
 
 .. code-block:: terminal
@@ -1064,8 +1064,6 @@ whenever a service/controller defines a ``$projectDir`` argument, use this:
         // config/services.php
         namespace Symfony\Component\DependencyInjection\Loader\Configurator;
 
-        use App\Controller\LuckyController;
-
         return static function (ContainerConfigurator $container) {
             $container->services()
                 ->defaults()

frontend/custom_version_strategy.rst

@@ -139,7 +139,6 @@ After creating the strategy PHP class, register it as a Symfony service.
         namespace Symfony\Component\DependencyInjection\Loader\Configurator;
 
         use App\Asset\VersionStrategy\GulpBusterVersionStrategy;
-        use Symfony\Component\DependencyInjection\Definition;
 
         return function(ContainerConfigurator $container) {
             $services = $container->services();

service_container.rst

@@ -803,10 +803,7 @@ You can also use the ``bind`` keyword to bind specific arguments by name or type
         // config/services.php
         namespace Symfony\Component\DependencyInjection\Loader\Configurator;
 
-        use App\Controller\LuckyController;
         use Psr\Log\LoggerInterface;
-        use Symfony\Component\DependencyInjection\Definition;
-        use Symfony\Component\DependencyInjection\Reference;
 
         return function(ContainerConfigurator $container) {
             $services = $container->services()