w1-gpio: remove erroneous __exit and __exit_p()

Commit 8a1861d9 ("w1-gpio: Simplify & get rid of defines") changed
(apparently unknowingly) the driver to a hotpluggable platform-device
driver but did not not update the section markers for probe and remove
(to __devinit/exit, which have since been removed). A later commit fixed
the section mismatch for probe, but left remove marked with __exit.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Cc: stable <stable@vger.kernel.org> # 3.8
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/w1/masters/w1-gpio.c

@@ -158,7 +158,7 @@ static int w1_gpio_probe(struct platform_device *pdev)
 	return err;
 }
 
-static int __exit w1_gpio_remove(struct platform_device *pdev)
+static int w1_gpio_remove(struct platform_device *pdev)
 {
 	struct w1_bus_master *master = platform_get_drvdata(pdev);
 	struct w1_gpio_platform_data *pdata = pdev->dev.platform_data;
@@ -210,7 +210,7 @@ static struct platform_driver w1_gpio_driver = {
 		.of_match_table = of_match_ptr(w1_gpio_dt_ids),
 	},
 	.probe = w1_gpio_probe,
-	.remove	= __exit_p(w1_gpio_remove),
+	.remove	= w1_gpio_remove,
 	.suspend = w1_gpio_suspend,
 	.resume = w1_gpio_resume,
 };