Uninstalling HyperV from Windows 8
Solution 1:
try launching:
appwiz.cpl and then going to add / remove feature. Search for it there.
Bring up the Run box, command prompt, or Start Search and type "appwiz.cpl" without the quotes.
Once the Add / Remove programs dialog opens, click Add / Remove features on the left.
Find the Hyper-V add-in and un-check it.
In fact, a quick search confirms this should work.
Solution 2:
Removing the feature from the control panel menu didn't work for me. However the following command did. It needs to be run from an admin command prompt.
Dism /online /disable-feature /featurename:Microsoft-Hyper-V