How to Hide Wpdevart vertical menu Admin Menus

function plt_hide_wpdevart_vertical_menu_menus() {
	//Hide "Vertical Menu".
	remove_menu_page('wpda_vertical_menu_themes');
	//Hide "Vertical Menu → Vertical Menu Theme".
	remove_submenu_page('wpda_vertical_menu_themes', 'wpda_vertical_menu_themes');
	//Hide "Vertical Menu → Featured Plugins".
	remove_submenu_page('wpda_vertical_menu_themes', 'wpda_vertical_menu_featured_plugins');
	//Hide "Vertical Menu → Featured Themes".
	remove_submenu_page('wpda_vertical_menu_themes', 'wpda_vertical_menu_featured_themes');
	//Hide "Vertical Menu → Hire an Expert".
	remove_submenu_page('wpda_vertical_menu_themes', 'wpda_vertical_menu_hire_expert');
	//Hide "Vertical Menu → Support or Any Ideas?".
	remove_submenu_page('wpda_vertical_menu_themes', 'https://wordpress.org/support/plugin/wpdevart-vertical-menu/');
}

add_action('admin_menu', 'plt_hide_wpdevart_vertical_menu_menus', 11);
Where do I put this code?