Add docs about removing regression tests
Add docs about removing regression tests

stwalsh/smart-answers,stwalsh/smart-answers,stwalsh/smart-answers,stwalsh/smart-answers,alphagov/smart-answers,alphagov/smart-answers,aledelcueto/smart-answers,alphagov/smart-answers,aledelcueto/smart-answers,aledelcueto/smart-answers,aledelcueto/smart-answers,alphagov/smart-answers