How to Hide Easing Slider Admin Menus

function plt_hide_easing_slider_menus() {
	//Hide "Sliders".
	remove_menu_page('easingslider');
	//Hide "Sliders → All Sliders".
	remove_submenu_page('easingslider', 'easingslider');
	//Hide "Sliders → Add New".
	remove_submenu_page('easingslider', 'easingslider-add-new');
	//Hide "Sliders → Settings".
	remove_submenu_page('easingslider', 'easingslider-settings');
	//Hide "Sliders → Get More Features!".
	remove_submenu_page('easingslider', 'easingslider-addons');
}

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

Where do I put this code?