That is how to do it! I did it for CYGK (Kingston, Ontario, Canada) as I could not just remove elements from the default MSFS airport. I ended up rebuilding it, when I had started just to remove the erroneous taxi lighting and aprons and lengthen one runway by 1000 feet. Still debugging a few things but it is on Flightsim.to.
It is tedious but corrects a lot of problems that may not get updated by MSFS team for years.