function plt_hide_add_google_plus_one_social_share_button_menus() {
//Hide the "Settings → Google +1 Share" menu.
remove_submenu_page('options-general.php', 'google-plus-one-share-button');
}
add_action('admin_menu', 'plt_hide_add_google_plus_one_social_share_button_menus', 11);