Remove unnecessary items from the admin bar

gistfile1.txt

// Remove unnecessary items from the admin bar
function gist_custom_admin_bar_remove() {
  global $wp_admin_bar;
  $wp_admin_bar->remove_menu('wp-logo');
  // $wp_admin_bar->remove_menu('comments');
  $wp_admin_bar->remove_menu('new-media');
  $wp_admin_bar->remove_menu('new-link');
  $wp_admin_bar->remove_menu('new-user');
  $wp_admin_bar->remove_menu('new-theme');
  $wp_admin_bar->remove_menu('new-plugin');
  $wp_admin_bar->remove_menu('appearance');
  $wp_admin_bar->remove_menu('w3tc');
}
add_action('wp_before_admin_bar_render', 'gist_custom_admin_bar_remove', 0);