rtc: abx80x: remove useless .remove

.remove is empty, remove it.

Signed-off-by: Alexandre Belloni <[e-mail]>

drivers/rtc/rtc-abx80x.c

···
 	return rtc_register_device(priv->rtc);
 }
 
-static int abx80x_remove(struct i2c_client *client)
-{
-	return 0;
-}
-
 static const struct i2c_device_id abx80x_id[] = {
 	{ "abx80x", ABX80X },
 	{ "ab0801", AB0801 },
···
 		.name	= "rtc-abx80x",
 	},
 	.probe		= abx80x_probe,
-	.remove		= abx80x_remove,
 	.id_table	= abx80x_id,
 };