How to Hide The Ultimate AdBlock Detector - AdBlock Guard Admin Menus

function plt_hide_ad_block_guard_menus() {
	//Hide "AdBlock Guard".
	remove_menu_page('wuadblockguard_settings');
	//Hide "AdBlock Guard → AdBlock Guard".
	remove_submenu_page('wuadblockguard_settings', 'wuadblockguard_settings');
	//Hide "AdBlock Guard → Demo Overlay".
	remove_submenu_page('wuadblockguard_settings', 'wuadblockguard_demo_page');
	//Hide "AdBlock Guard → License Key".
	remove_submenu_page('wuadblockguard_settings', 'wuadblockguard_license_key');
	//Hide "AdBlock Guard → System Check".
	remove_submenu_page('wuadblockguard_settings', 'wuadblockguard_system_check');
}

add_action('admin_menu', 'plt_hide_ad_block_guard_menus', 101);

Where do I put this code?