function plt_hide_voting_menus() {
//Hide the "Voting" menu.
remove_menu_page('voting_menu_settings');
//Hide the "Voting → Voting" menu.
remove_submenu_page('voting_menu_settings', 'voting_menu_settings');
//Hide the "Voting → Help & Upgrade" menu.
remove_submenu_page('voting_menu_settings', 'voting_menu_help');
}
add_action('admin_menu', 'plt_hide_voting_menus', 11);