Bukkit

Removed a workaround for an issue with Tuinity delayed chunk unloading, as it has since been fixed in their 1.16.4 builds. Also I'd like to note that older versions of Chunky should continue to work just fine on 1.16.4 (and probably still even on 1.17 when that comes out), although I would still recommend updating to the latest version if possible before generating your worlds.