In v8.0, a removeShard operation was still not idempotent (SERVER-102390), meaning that, in the presence of stepdowns, a removeShard operation may fail with a ShardNotFound error in case of retrying the operation due to a stepdown on the config server.

Therefore, we need to update the remove_shard_with_unsharded.js test to ignore ShardNotFound errors on the final removeShard call. To do so, we can use the removeShard() function from the remove_shard_util.js file.