How to Hide All-in-One Debug Lab Admin Menus

function plt_hide_all_in_one_debug_lab_menus() {
	//Hide the "All-in-One Debug Lab" menu.
	remove_menu_page('slug_debug_plugin_36bQ3n');
	//Hide the "All-in-One Debug Lab → Show Debug Log" menu.
	remove_submenu_page('slug_debug_plugin_36bQ3n', 'slug_debug_plugin_36bQ3n');
	//Hide the "All-in-One Debug Lab → Setting" menu.
	remove_submenu_page('slug_debug_plugin_36bQ3n', 'submenu_slug_settings_36bQ3n');
}

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

Where do I put this code?