removing bootstrap

Author: weaverryan

ux.symfony.com/importmap.php

@@ -148,8 +148,4 @@
     '@formatjs/fast-memoize' => [
         'version' => '2.2.0',
     ],
-    'bootstrap/dist/css/bootstrap.min.css' => [
-        'version' => '5.3.2',
-        'type' => 'css',
-    ],
 ];