How to Hide Enlighter - Customizable Syntax Highlighter Admin Menus

function plt_hide_enlighter_menus() {
	//Hide "Enlighter".
	remove_menu_page('enlighter-appearance');
	//Hide "Enlighter → Appearance".
	remove_submenu_page('enlighter-appearance', 'enlighter-appearance');
	//Hide "Enlighter → Theme Customizer".
	remove_submenu_page('enlighter-appearance', 'enlighter-customizer');
	//Hide "Enlighter → Editing".
	remove_submenu_page('enlighter-appearance', 'enlighter-editing');
	//Hide "Enlighter → Compatibility".
	remove_submenu_page('enlighter-appearance', 'enlighter-compatibility');
	//Hide "Enlighter → Extensions".
	remove_submenu_page('enlighter-appearance', 'enlighter-extensions');
	//Hide "Enlighter → Options".
	remove_submenu_page('enlighter-appearance', 'enlighter-options');
	//Hide "Enlighter → About".
	remove_submenu_page('enlighter-appearance', 'enlighter-about');
}

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

Where do I put this code?