scsi: core: Remove obsoleted declaration for scsi_driverbyte_string()

scsi_driverbyte_string() has been unused since commit 54c2908 ("scsi:
core: Drop the now obsolete driver_byte definitions"). Remove it.

Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Link: https://lore.kernel.org/r/20240826032005.4007834-1-cuigaosheng1@huawei.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

Author: gscui

include/scsi/scsi_dbg.h

@@ -24,7 +24,6 @@ extern const char *scsi_extd_sense_format(unsigned char, unsigned char,
 					  const char **);
 extern const char *scsi_mlreturn_string(int);
 extern const char *scsi_hostbyte_string(int);
-extern const char *scsi_driverbyte_string(int);
 #else
 static inline bool
 scsi_opcode_sa_name(int cmd, int sa,
@@ -76,12 +75,6 @@ scsi_hostbyte_string(int result)
 	return NULL;
 }
 
-static inline const char *
-scsi_driverbyte_string(int result)
-{
-	return NULL;
-}
-
 #endif
 
 #endif /* _SCSI_SCSI_DBG_H */