Unset CIRCLE_NODE_TOTAL and CIRCLE_NODE_INDEX
Unset CIRCLE_NODE_TOTAL and CIRCLE_NODE_INDEX

Since it breaks CircleCI.
The plugin tries to be "smart", but we don't run unit tests in ALL Circle containers and so splitting is wrong

StackStorm/st2,Plexxi/st2,StackStorm/st2,nzlosh/st2,nzlosh/st2,nzlosh/st2,StackStorm/st2,Plexxi/st2,StackStorm/st2,Plexxi/st2,nzlosh/st2,Plexxi/st2