remove unused configuration panel_iframe

README.md

@@ -16,7 +16,6 @@ Currently this runs in a docker container hosted at [homesrv01](#hosting). All n
   - [Wyoming Protocol](#wyoming-protocol)
   - [HACS](#hacs)
   - [Google Cast](#google-cast)
-  - [Iframe Panel](#iframe-panel)
   - [LG webOS Smart TV](#lg-webos-smart-tv)
   - [Mobile App](#mobile-app)
   - [Meteorologisk institutt (Met.no)](#meteorologisk-institutt-metno)
@@ -93,9 +92,6 @@ Docker containers currently hosted at [homesrv01.dev.lan](https://git.limbosolut
 - [Home Assistant - Official integration documentation](https://www.home-assistant.io/integrations/cast)
 - [Official git repo](https://github.com/home-assistant/core/tree/dev/homeassistant/components/cast)
 
-### Iframe Panel
-
-- TODO: check if it's used.
 
 ### LG webOS Smart TV