Remove obsolete DOMContentLoadedEventListener

app/assets/javascripts/pages/projects/boards/index.js

@@ -2,8 +2,6 @@ import ShortcutsNavigation from '~/behaviors/shortcuts/shortcuts_navigation';
 import initBoards from '~/boards';
 import UsersSelect from '~/users_select';
 
-document.addEventListener('DOMContentLoaded', () => {
-  new UsersSelect(); // eslint-disable-line no-new
-  new ShortcutsNavigation(); // eslint-disable-line no-new
-  initBoards();
-});
+new UsersSelect(); // eslint-disable-line no-new
+new ShortcutsNavigation(); // eslint-disable-line no-new
+initBoards();