removed doc for PIV SM option that's likely to change

etc/opensc.conf.example.in

@@ -227,20 +227,7 @@ app default {
  }
 
  card_driver PIV-II {
- # *NOTE* The following are only useble if OpenSC is configured with --enable-piv-sm
- # The names and locations are likely to change in the future
- # See: https://github.com/OpenSC/OpenSC/pull/2053/files#r1267388721
-
- # "piv_use_sm"
- # NIST sp800-73-4 supports Secure Messaging (SM), an optional feature.
- #
- # "piv_use_sm" may be set to:
- # never - Don't use it. Card will react the same as cards without SM.
- # always - Always use SM if card supports it for contact and contactless
- # default - If card supports SM use for contactless (NFC) and for PIN, crypto,
- # and sensitive objects with contact.
- # piv_use_sm = "default";
- # May be set via environment: PIV_USE_SM=default
+ # *NOTE* The following are only useable if OpenSC is configured with --enable-piv-sm
 
  # "piv_pairing_code"
  # Virtual Contact Interface (VCI) an optional feature, to allow