Convert 11-speed cassette to fit 10-speed hub

[shaper]

14 hours ago, David Marshall said:

It works.  The problem being if you change the wheel to another bike you have to reset the gears and obviously have to adapt any new cassette.  A better option is to machine the free hub if there is sufficient "meat" it.  Ideally 1.8mm but you can get away with a bit less.

If you need a short term solution you can drop one gear off the cassette and ride it as a 10 speed with one redundant click on the shifter. 

What Dave says, remove 1.8mm from the freehub.  I have done it for a number of wheels.  There plenty of Youtube videos online showing you this.  Any engineering machine shop will be able to do this.