How to Hide WP Mail Logging Admin Menus

function plt_hide_wp_mail_logging_menus() {
	//Hide "WP Mail Logging".
	remove_menu_page('wpml_plugin_log');
	//Hide "WP Mail Logging → Email Log".
	remove_submenu_page('wpml_plugin_log', 'wpml_plugin_log');
	//Hide "WP Mail Logging → Settings".
	remove_submenu_page('wpml_plugin_log', 'wpml_plugin_log&tab=settings');
	//Hide "WP Mail Logging → SMTP".
	remove_submenu_page('wpml_plugin_log', 'wpml_plugin_log&tab=smtp');
}

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

Where do I put this code?