function plt_hide_back_button_widget_menus() {
//Hide the "WPFactory" menu.
remove_menu_page('wpfactory');
//Hide the "WPFactory → Back Button" menu.
remove_submenu_page('wpfactory', 'alg-back-button-settings');
//Hide the "WPFactory → Recommendations" menu.
remove_submenu_page('wpfactory', 'wpfactory-cross-selling');
}
add_action('admin_menu', 'plt_hide_back_button_widget_menus', 11);