I think that's probably the case. Seems a bit of a backwards step to remove it though, as it's whole reason is to reduce engine bay temperature, perhaps it wasn't needed so much for the TF engine bay.
As it's unused I could use it to display engine bay temperature for testing purposes.
I tested the fan relay, which was fine, the trip for circuit had a 12v feed and presumably earthed by the ECU to make the circuit. So if coolant temperature gets high it'll work then I guess. Will have to check in summer.