Remove helper method declaration
Remove helper method declaration

The method `require_account` does not exist so there's no need
for it to be declared a helper method.

unboxed/e-petitions,StatesOfJersey/e-petitions,alphagov/e-petitions,alphagov/e-petitions,StatesOfJersey/e-petitions,joelanman/e-petitions,oskarpearson/e-petitions,unboxed/e-petitions,unboxed/e-petitions,StatesOfJersey/e-petitions,StatesOfJersey/e-petitions,alphagov/e-petitions,joelanman/e-petitions,joelanman/e-petitions,unboxed/e-petitions,alphagov/e-petitions,oskarpearson/e-petitions,oskarpearson/e-petitions