usb: phy: gpio-vbus-usb: Remove redundant platform_set_drvdata()

Commit 0998d063 (device-core: Ensure drvdata = NULL when no
driver is bound) removes the need to set driver data field to
NULL.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/phy/phy-gpio-vbus-usb.c

@@ -343,7 +343,6 @@ static int __init gpio_vbus_probe(struct platform_device *pdev)
 		gpio_free(pdata->gpio_pullup);
 	gpio_free(pdata->gpio_vbus);
 err_gpio:
-	platform_set_drvdata(pdev, NULL);
 	kfree(gpio_vbus->phy.otg);
 	kfree(gpio_vbus);
 	return err;
@@ -365,7 +364,6 @@ static int __exit gpio_vbus_remove(struct platform_device *pdev)
 	if (gpio_is_valid(pdata->gpio_pullup))
 		gpio_free(pdata->gpio_pullup);
 	gpio_free(gpio);
-	platform_set_drvdata(pdev, NULL);
 	kfree(gpio_vbus->phy.otg);
 	kfree(gpio_vbus);