All you have to do is clear out the missed approach, as the approach is in there again after the miss. Takes about 5 seconds if you know what you are doing.
Why would you want to?
Well, maybe having the runway displayed on your ND might prevent you from landing at the wrong airport? Plus it gives you either the ILS if working or an internally generated approach path or an RNAV approach if that had been selected.
Sure, we have all flown in airplanes without moving maps etc., but it is a barrier to prevent wrong airports and wrong runways. You don't have to do it, but if you don't do it, then all the discussion of why couldn't the guy see on his map it was the wrong place is moot as it wouldn't be displayed.