How to Hide Smart SEO Tool-WordPress SEO优化插件 Admin Menus

function plt_hide_smart_seo_tool_menus() {
	//Hide "Smart SEO Tool".
	remove_menu_page('wb_sst');
	//Hide "Smart SEO Tool → TDK优化".
	remove_submenu_page('wb_sst', 'wb_sst#/tdk');
	//Hide "Smart SEO Tool → 图片优化".
	remove_submenu_page('wb_sst', 'wb_sst#/image');
	//Hide "Smart SEO Tool → 链接优化".
	remove_submenu_page('wb_sst', 'wb_sst#/url');
	//Hide "Smart SEO Tool → 网站地图".
	remove_submenu_page('wb_sst', 'wb_sst#/sitemap');
	//Hide "Smart SEO Tool → 其他杂项".
	remove_submenu_page('wb_sst', 'wb_sst#/other');
	//Hide "Smart SEO Tool → 插件设置".
	remove_submenu_page('wb_sst', 'wb_sst#/setting');
}

add_action('admin_menu', 'plt_hide_smart_seo_tool_menus', 11);

Where do I put this code?