Clean up from Bar and Antony code review. Found an issue with the header file...

Clean up from Bar and Antony code review. Found an issue with the header file were it could end up corrupted.

sql/examples/ha_archive.h

@@ -52,7 +52,6 @@ class ha_archive: public handler
   z_off_t current_position;  /* The position of the row we just read */
   byte byte_buffer[IO_SIZE]; /* Initial buffer for our string */
   String buffer;             /* Buffer used for blob storage */
-  uint version;              /* Used for recording version */
   ulonglong scan_rows;       /* Number of rows left in scan */
 
 public: