gpg: Remove unfinished experimental code to export as S-expressions.
* g10/options.h (EXPORT_SEXP_FORMAT): Remove. (EXPORT_DANE_FORMAT): New. * g10/export.c (parse_export_options): Remove "export-sexp-format". (export_seckeys): Adjust for removed option. (export_secsubkeys): Ditto. (do_export): Prepare for DANE format. (build_sexp, build_sexp_seckey): Remove. (do_export_stream): Remove use of removed functions.
- Signed-off-by: Werner Koch <wk@gnupg.org>