power: supply: axp20x_usb_power: Remove unused device_node

This member of struct axp20x_usb_power is not used anywhere.
Remove it.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/supply/axp20x_usb_power.c

@@ -57,7 +57,6 @@
 #define DEBOUNCE_TIME			msecs_to_jiffies(50)
 
 struct axp20x_usb_power {
-	struct device_node *np;
 	struct regmap *regmap;
 	struct power_supply *supply;
 	enum axp20x_variants axp20x_id;
@@ -465,7 +464,6 @@ static int axp20x_usb_power_probe(struct platform_device *pdev)
 	power->axp20x_id = (enum axp20x_variants)of_device_get_match_data(
 								&pdev->dev);
 
-	power->np = pdev->dev.of_node;
 	power->regmap = axp20x->regmap;
 
 	if (power->axp20x_id == AXP202_ID) {