HID: wacom: remove unused packet lengths

#define WACOM_NAME_MAX		64

/* packet length for individual models */

#define WACOM_PKGLEN_PENPRTN	 7

#define WACOM_PKGLEN_GRAPHIRE	 8

#define WACOM_PKGLEN_BBFUN	 9

#define WACOM_PKGLEN_INTUOS	10

#define WACOM_PKGLEN_TPC1FG	 5

#define WACOM_PKGLEN_TPC1FG_B	10

#define WACOM_PKGLEN_TPC2FG	14

#define WACOM_PKGLEN_BBTOUCH3	64

#define WACOM_PKGLEN_BBPEN	10

#define WACOM_PKGLEN_WIRELESS	32

#define WACOM_PKGLEN_MTOUCH	62

#define WACOM_PKGLEN_MTTPC	40

#define WACOM_PKGLEN_DTUS	68

#define WACOM_PKGLEN_PENABLED	 8

#define WACOM_PKGLEN_BPAD_TOUCH	32

#define WACOM_PKGLEN_BPAD_TOUCH_USB	64