I was told to remove it by our builders, their opinion on it is what goes in production. Also some users complained to me that they did not like the design, so when builders came to me with the suggestion to remove it, I did not make any arguments.
You did not sign a contract, an SLA, or any paper that says we have to keep your map, or any other restriction that would stop us from simply managing our own server.
We have a bucketload of maps available, the maps are chosen based on popularity, we never removed the original maps because they were what got it started, so they have a certain push to them, but, in case you have not noticed, you barely can find a game with those maps, they are there, but extremely rare, and mostly replaced by new maps, wether our builders made them, or wether the community did.
If you are so outraged because of a simple act of removing a map that has been running on our server for months then, really, feel free to just make your own server and put it on there. You will notice people stop liking it after a while.
Just because you are the first of the community builds (maps made by our builders have been already modified or removed on various occasions) to get taken out of the SkyWars rotation should not show such outrage from your side, the game gets old, new maps replace old ones, its a cycle, you should know it.