Caso alguém tenha a mesma pergunta visitada aqui, visite o guia oficial .
O seguinte é citado do guia original que foi atualizado em 2017-4-14.
Uninstall Visual Studio for Mac App
Step 1. Locate Visual Studio.app in the /Applications directory and drag it to the Trash Can. Alternatively, right-click and select Move to Trash.
Step 2. Remove all traces of Visual Studio for Mac
Execute os seguintes comandos no seu terminal:
sudo rm -rf "/Applications/Visual Studio.app" rm -rf ~/Library/Caches/VisualStudio rm -rf ~/Library/Preferences/VisualStudio rm -rf "~/Library/Preferences/Visual Studio" rm -rf ~/Library/Logs/VisualStudio rm -rf ~/Library/VisualLodStudio
Desinstalar Xamarin.Android
sudo rm -rf /Developer/MonoDroid rm -rf ~/Library/MonoAndroid sudo pkgutil --forget com.xamarin.android.pkg sudo rm -rf /Library/Frameworks/Xamarin.Android.framework
Desinstalar o Xamarin.iOS
rm -rf ~/Library/MonoTouch sudo rm -rf /Library/Frameworks/Xamarin.iOS.framework sudo rm -rf /Developer/MonoTouch sudo pkgutil --forget com.xamarin.monotouch.pkg sudo pkgutil --forget com.xamarin.xamarin-ios-build-host.pkg
Desinstalar o Xamarin.Mac
sudo rm -rf /Library/Frameworks/Xamarin.Mac.framework rm -rf ~/Library/Xamarin.Mac
Desinstalar pastas de trabalho e inspetor
sudo /Library/Frameworks/Xamarin.Interactive.framework/Versions/Current/uninstall
Desinstalar o instalador do Visual Studio
rm -rf ~/Library/Caches/XamarinInstaller/ rm -rf ~/Library/Caches/VisualStudioInstaller/ rm -rf ~/Library/Logs/XamarinInstaller/ rm -rf ~/Library/Logs/VisualStudioInstaller/ rm -rf ~/Library/Preferences/Xamarin/ rm -rf "~/Library/Preferences/Visual Studio/"
Desinstalar o Mono SDK (MDK)
Warning
There are other applications outside of Xamarin which also use Mono, such as Unity. Be sure that there are no other dependencies on Mono before uninstalling it.
sudo rm -rf /Library/Frameworks/Mono.framework sudo pkgutil --forget com.xamarin.mono-MDK.pkg
Outros aplicativos com prefixo de nome Xamarin
O guia oficial não mencionou, mas descobri que havia outros aplicativos chamados Xamarin.xxxx no diretório da minha biblioteca. Eu simplesmente os movi para o lixo.