HID: wacom: drop WACOM_PKGLEN_STATUS

The constant is not used (leftover from previous patch versions
that never got merged).
Reported-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/wacom_wac.h

@@ -71,7 +71,6 @@
 #define WACOM_REPORT_USB		192
 #define WACOM_REPORT_BPAD_PEN		3
 #define WACOM_REPORT_BPAD_TOUCH		16
-#define WACOM_PKGLEN_STATUS		10
 
 /* device quirks */
 #define WACOM_QUIRK_MULTI_INPUT		0x0001