Fix scheduled publishing unit test.
Fix scheduled publishing unit test.

This should not have been stubbing the internals of another unit.

hotvulcan/whitehall,hotvulcan/whitehall,alphagov/whitehall,robinwhittleton/whitehall,YOTOV-LIMITED/whitehall,YOTOV-LIMITED/whitehall,askl56/whitehall,robinwhittleton/whitehall,alphagov/whitehall,alphagov/whitehall,ggoral/whitehall,YOTOV-LIMITED/whitehall,robinwhittleton/whitehall,ggoral/whitehall,YOTOV-LIMITED/whitehall,ggoral/whitehall,hotvulcan/whitehall,hotvulcan/whitehall,askl56/whitehall,askl56/whitehall,robinwhittleton/whitehall,alphagov/whitehall,askl56/whitehall,ggoral/whitehall