How to Hide Enhanced Media Library Admin Menus

function plt_hide_enhanced_media_library_menus() {
	//Hide "Media → Media Categories".
	remove_submenu_page('upload.php', 'edit-tags.php?taxonomy=media_category&post_type=attachment');

	//Hide "Settings → Media".
	remove_submenu_page('options-general.php', 'options-general.php?page=media');
	//Hide "Settings → Media Library".
	remove_submenu_page('options-general.php', 'media-library');
	//Hide "Settings → Media Taxonomies".
	remove_submenu_page('options-general.php', 'media-taxonomies');
	//Hide "Settings → MIME Types".
	remove_submenu_page('options-general.php', 'mime-types');
	//Hide "Settings → EML Utilities".
	remove_submenu_page('options-general.php', 'eml-settings');
}

add_action('admin_menu', 'plt_hide_enhanced_media_library_menus', 1002);

Where do I put this code?