It seems the current Unity installer can install but will not uninstall Monodevelop.
It leaves Monodevelop behind with no uninstaller - any ideas how to get rid of it (since you put it there and all??)
Unity answers is run by the community, not the Unity-developer team. There are of course some Unity developers around, but in general “we” have nothing to do with the development of Unity itself.
Regarding your question, well, i wasn’t in need to uninstall Unity yet :D. But if there’s no uninstall it might be a bug. Since you uninstalled Unity you can’t file a bug report, but you can give feedback here: