How to Hide Crowdsignal Polls & Ratings Admin Menus

function plt_hide_polldaddy_menus() {
	//Hide "Settings → Crowdsignal".
	remove_submenu_page('options-general.php', 'crowdsignal-settings');
	//Hide "Settings → Ratings".
	remove_submenu_page('options-general.php', 'ratingsettings');

	//Hide "Feedback".
	remove_menu_page('edit.php?post_type=feedback');
	//Hide "Feedback → Crowdsignal".
	remove_submenu_page('edit.php?post_type=feedback', 'polls');
	//Hide "Feedback → Ratings".
	remove_submenu_page('edit.php?post_type=feedback', 'ratings');
}

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

Where do I put this code?