[Site] Remove unused PostMount method

Thank you @Nayte91

Author: smnandre

ux.symfony.com/src/Twig/Components/Icon/IconSearch.php

@@ -18,7 +18,6 @@
 use Symfony\UX\LiveComponent\Attribute\AsLiveComponent;
 use Symfony\UX\LiveComponent\Attribute\LiveProp;
 use Symfony\UX\LiveComponent\DefaultActionTrait;
-use Symfony\UX\TwigComponent\Attribute\PostMount;
 
 #[AsLiveComponent('Icon:IconSearch')]
 class IconSearch
@@ -41,11 +40,6 @@ public function __construct(
     ) {
     }
 
-    #[PostMount]
-    public function postMount(): void
-    {
-    }
-
     public function getIconSetOptionGroups(): array
     {
         $groups = [];