How to Hide Webcraftic Updates manager Admin Menus

function plt_hide_webcraftic_updates_manager_menus() {
	//Hide "Settings → Updates manager".
	remove_submenu_page('options-general.php', 'updates-wbcr_updates_manager');
	//Hide "Plugins".
	remove_menu_page('plugins-wbcr_updates_manager');
	//Hide "Themes".
	remove_menu_page('themes-wbcr_updates_manager');
	//Hide "Advanced".
	remove_menu_page('updates_advanced-wbcr_updates_manager');
	//Hide "More features (free)".
	remove_menu_page('more_features-wbcr_updates_manager');
}

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

Where do I put this code?