Fix formatting in hesokuri.git/remove-entry

- Use , to indent the last continued 'cond' entry. Considered doing this for the
  hesokuri.git/remove-entry test case, but this made the code look more
  cluttered. Decided using blank lines is more natural for this case.
- Do not use arity-overloading syntax for the defn, since there is only one
  arity for this function.