remove PC/SC tools

src/gnuk.h

@@ -163,7 +163,6 @@ int flash_write_binary (uint8_t file_id, const uint8_t *data,
 
 /* Linker set these two symbols */
 extern uint8_t ch_certificate_start;
-extern uint8_t random_bits_start;
 
 #define FIRMWARE_UPDATE_KEY_CONTENT_LEN 256	/* RSA-2048 (p and q) */
 

src/openpgp-do.c

@@ -489,11 +489,13 @@ static int
 do_hist_bytes (uint16_t tag, int with_tag)
 {
   /*
-   * Currently, we support no life cycle management.
-   * In case of Gnuk, user could flash the MCU, instead.
-   * Thus, just return the template as is.
+   * Currently, we support no life cycle management.  In case of Gnuk,
+   * user could flash the MCU with SWD/JTAG, instead.  It is also
+   * possible for user to do firmware upgrade through USB.
    *
-   * In future (when Gnuk will be onn the real smartcard),
+   * Thus, here, it just returns the template as is.
+   *
+   * In future (when Gnuk will be on the real smartcard),
    * we can support life cycle management by implementing
    * TERMINATE DF / ACTIVATE FILE and fix code around here.
    */