drivers/rtc/rtc-m41t93.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: NSachin Kamat <sachin.kamat@linaro.org>
Cc: Nikolaus Voss <n.voss@weinmann.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/rtc/rtc-m41t93.c

@@ -194,19 +194,12 @@ static int m41t93_probe(struct spi_device *spi)
 	return 0;
 }
 
-
-static int m41t93_remove(struct spi_device *spi)
-{
-	return 0;
-}
-
 static struct spi_driver m41t93_driver = {
 	.driver = {
 		.name	= "rtc-m41t93",
 		.owner	= THIS_MODULE,
 	},
 	.probe	= m41t93_probe,
-	.remove = m41t93_remove,
 };
 
 module_spi_driver(m41t93_driver);