With that said, if you're adamant you want to get rid of it then i wouldn't buy it from Darkside as they charge well over the odds for what is essentially a piece of tube.
You can buy the same thing from China on Aliexpress for about a tenner!
As for the cooler delete then do as i did and buy it directly from TPS, if you cant get anything out them then try the main dealer using the part number on the Darkside website.