Remove deprecated configuration
Remove deprecated configuration

Implicit join references are now always disabled.

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