Remove use_legacy_data option from country_select
Remove use_legacy_data option from country_select

This `country_select` option is not used in any of the "production" flows and so
it can safely be removed.

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