hid-input/battery: remove battery_val

hidinput_get_battery_property() now directly polls the device for the
current battery strength, so there's no need for battery_val, or the
code to set it on the input event path.
Signed-off-by: NJeremy Fitzhardinge <jeremy@goop.org>

drivers/hid/hid-input.c

@@ -917,14 +917,6 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct
 
 	input = field->hidinput->input;
 
-#ifdef CONFIG_HID_BATTERY_STRENGTH
-	if (usage->hid == HID_DC_BATTERYSTRENGTH) {
-		hid->battery_val = value;
-		hid_dbg(hid, "battery value is %d (range %d-%d)\n",
-			value, hid->battery_min, hid->battery_max);
-		return;
-	}
-#endif
 	if (!usage->type)
 		return;
 

include/linux/hid.h

@@ -495,7 +495,6 @@ struct hid_device {							/* device report descriptor */
 	struct power_supply battery;
 	__s32 battery_min;
 	__s32 battery_max;
-	__s32 battery_val;
 	__s32 battery_report_type;
 	__s32 battery_report_id;
 #endif