Sometimes after delegating permissions to a user or group it may be required to revoke them (maybe the user has left or group belongs to a temporary team of contractors). To do this you cant go through the delegate control wizard and take back the permissions as you would expect so just thought i would put a quick post up showing how to

First of all open ADUC and select view and make sure Advanced Features is checked

Next right click the OU that you need to remove the delegated permissions from and select properties and then the security tab

Here you should be able to see the user/group that you originally delegated permission to. In order to revoke these delegated permissions simply remove them from the ACL