How to Hide WPAdmin AWS CDN Admin Menus

function plt_hide_aws_cdn_by_wpadmin_menus() {
	//Hide "WPAdmin CDN".
	remove_menu_page('wpa-aws-setup');
	//Hide "WPAdmin CDN → WPAdmin CDN".
	remove_submenu_page('wpa-aws-setup', 'wpa-aws-setup');
	//Hide "WPAdmin CDN → SSL Manager".
	remove_submenu_page('wpa-aws-setup', 'wpa-aws-ssl');
	//Hide "WPAdmin CDN → FAQ / How To".
	remove_submenu_page('wpa-aws-setup', 'wpa-aws-faq-how-to');
	//Hide "WPAdmin CDN → Support Us".
	remove_submenu_page('wpa-aws-setup', 'wpa-aws-donate');
}

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

Where do I put this code?