HID: hid-multitouch: class MT_CLS_STANTUM is redundant with MT_CLS_CONFIDENCE

Stantum devices used to work with MT_CLS_STANTUM but MT_CLS_CONFIDENCE
is exactly the same. This patch switches them to this generic class,
and remove the unused MT_CLS_STANTUM.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@enac.fr>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/hid-multitouch.c

@@ -88,7 +88,6 @@ struct mt_class {
 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER	3
 #define MT_CLS_CYPRESS				4
 #define MT_CLS_EGALAX				5
-#define MT_CLS_STANTUM				6
 #define MT_CLS_3M				7
 #define MT_CLS_CONFIDENCE			8
 #define MT_CLS_CONFIDENCE_MINUS_ONE		9
@@ -154,8 +153,6 @@ struct mt_class mt_classes[] = {
 		.sn_move = 4096,
 		.sn_pressure = 32,
 	},
-	{ .name = MT_CLS_STANTUM,
-		.quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 	{ .name = MT_CLS_3M,
 		.quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 			MT_QUIRK_SLOT_IS_CONTACTID,
@@ -673,13 +670,13 @@ static const struct hid_device_id mt_devices[] = {
 			USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },
 
 	/* Stantum panels */
-	{ .driver_data = MT_CLS_STANTUM,
+	{ .driver_data = MT_CLS_CONFIDENCE,
 		HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 			USB_DEVICE_ID_MTP)},
-	{ .driver_data = MT_CLS_STANTUM,
+	{ .driver_data = MT_CLS_CONFIDENCE,
 		HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 			USB_DEVICE_ID_MTP_STM)},
-	{ .driver_data = MT_CLS_STANTUM,
+	{ .driver_data = MT_CLS_CONFIDENCE,
 		HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,
 			USB_DEVICE_ID_MTP_SITRONIX)},