function plt_hide_simple_share_buttons_adder_menus() {
//Hide the "Simple Share Buttons" menu.
remove_menu_page('simple-share-buttons-adder');
//Hide the "Settings → Simple Share Buttons" menu.
remove_submenu_page('options-general.php', 'simple-share-buttons-adder');
}
add_action('admin_menu', 'plt_hide_simple_share_buttons_adder_menus', 11);