drivers/rtc/rtc-da9052.c: remove empty function

After the switch to devm_ functions and the removal of
rtc_device_unregister(), the 'remove' function does not do anything.
Delete it.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: David Dajun Chen <dchen@diasemi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/rtc/rtc-da9052.c

@@ -255,14 +255,8 @@ static int da9052_rtc_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int da9052_rtc_remove(struct platform_device *pdev)
-{
-	return 0;
-}
-
 static struct platform_driver da9052_rtc_driver = {
 	.probe	= da9052_rtc_probe,
-	.remove	= da9052_rtc_remove,
 	.driver = {
 		.name	= "da9052-rtc",
 		.owner	= THIS_MODULE,