Have recently moved from a system boiler to a combi boiler.
Still have the hot water option even though it is now defunct, would be good to be able to hide it in the settings.
Tado support can remove the hot water option if not needed and it isn't usually present where it's clear the boiler doesn't support hot water changes. It depends on how you have wired the boiler in and the make & model as to whether it's an option or not. If you are using the BUS connections then the hot water functionality is correct to be there as it's a paramter that can be changed on combis.