drivers/rtc/rtc-isl12022.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 <[e-mail]>
Cc: Roman Fietze <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/rtc/rtc-isl12022.c

···
 	return 0;
 }
 
-static int isl12022_remove(struct i2c_client *client)
-{
-	return 0;
-}
-
 static const struct i2c_device_id isl12022_id[] = {
 	{ "isl12022", 0 },
 	{ }
···
 		.name	= "rtc-isl12022",
 	},
 	.probe		= isl12022_probe,
-	.remove		= isl12022_remove,
 	.id_table	= isl12022_id,
 };