Remove unused var
Remove unused var

Acidburn0zzz/docker-node,liuhong1happy/docker-node,sirgallifrey/docker-node-test,chorrell/docker-node,moander/docker-node,pesho/docker-node,chorrell/docker-node,nodejs/docker-node,joyent/docker-node,hmalphettes/docker-node,VictorBjelkholm/docker-node,sebflipper/docker-node,nodejs/docker-node