Uninstalling Cygwin properly (.\setup.exe --uninstall ?)?

[Mark Liam Brown]

Greetings!

What is the official procedure to uninstall Cygwin properly? Just
deleting C:\cygwin64 from Explorer yields lots of "malformed ACL
warnings", and the registry still contains traces of Cygwin64

(We're not trying to quit using Cygwin, just want a clean way to
uninstall Cygwin and install it again for each test cycle)

Mark
-- 
IT Infrastructure Consultant
Windows, Linux