gpg: Turn --no-mdc-warn into a NOP.
* g10/gpg.c (oNoMDCWarn): Remove. (opts): Make --no-mdc-warn a NOP. (main): Don't set var. * g10/options.h (struct opt): Remove 'no_mdc_var'. * g10/cipher-cfb.c (write_header): Assume opt.no_mdc_warn is false. * g10/mainproc.c (proc_encrypted): Ditto.
Users should not be allowed to suppress the warning that they are
shooting into their foot.
- Signed-off-by: Werner Koch <wk@gnupg.org>