tty: jsm: remove unused struct jsm_board members

clang-struct [1] found jsm_board::type and ::jsm_board_entry unused.

::jsm_board_entry is unused since 614a7d6a76b7 ("fix up newly added jsm driver")
::type was never used as far as I can tell. Even when the driver was
introduced in the pre-git era.

Remove them both.

[1] https://github.com/jirislaby/clang-struct

Signed-off-by: "Jiri Slaby (SUSE)" <[e-mail]>
Reviewed-by: Ilpo Järvinen <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/tty/serial/jsm/jsm.h

···
 {
 	int		boardnum;	/* Board number: 0-32 */
 
-	int		type;		/* Type of board */
 	u8		rev;		/* PCI revision ID */
 	struct pci_dev	*pci_dev;
 	u32		maxports;	/* MAX ports this board can handle */
···
 	u32		bd_dividend;	/* Board/UARTs specific dividend */
 
 	struct board_ops *bd_ops;
-
-	struct list_head jsm_board_entry;
 };
 
 /************************************************************************