Look just under the handle and you will see a plastic rivet, push the centre out.
The centre will emerge from the other side.
Take it out and the plastic insert too.
Look into the hole left by the insert, there is a screw inside. Loosen this by 10 turns.
Grab the handle and slide the whole thing towards the back of the car and out.
The cables can now be unclipped from the handle for full removal.