Hi thanks for posting!
NCrunch is just a standard windows program like any other, and if you installed it via MSI, it uninstalls from the 'Programs and Features' list.
Otherwise, all you need to do is remove the following directory with its contents (with your IDE closed):
Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\Extensions\Remco Software
If you can share any details about why you've decided to uninstall, I'd be very interested to learn if there's anything I can do to improve the software for you.
Thanks!
Remco