Get rid of low-value tests
Get rid of low-value tests

Most of the tests provided little value and were more complicated than they
needed to be. This simplifies things down to a single test that covers the
important part of ensuring that role appointments persist between editions.

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