Remove duplicate cniVersion in configmap

Signed-off-by: Odin Ugedal <odin@ugedal.com>

Documentation/kube-flannel.yml

@@ -105,7 +105,6 @@ metadata:
 data:
   cni-conf.json: |
     {
-      "cniVersion": "0.2.0",
       "name": "cbr0",
       "cniVersion": "0.3.1",
       "plugins": [