hwmon: (pmbus) Simplify remove functions

Since devm_kzalloc() is now used to allocate driver memory, the client
driver remove function has no purpose other than to call pmbus_do_remove().
This means we can get rid of it by redefining pmbus_do_remove() to use the
same prototype, and pointing to it directly.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
diff --git a/drivers/hwmon/pmbus/zl6100.c b/drivers/hwmon/pmbus/zl6100.c
index 9d3b845..e5bb735 100644
--- a/drivers/hwmon/pmbus/zl6100.c
+++ b/drivers/hwmon/pmbus/zl6100.c
@@ -240,18 +240,12 @@
 	return pmbus_do_probe(client, mid, info);
 }
 
-static int zl6100_remove(struct i2c_client *client)
-{
-	pmbus_do_remove(client);
-	return 0;
-}
-
 static struct i2c_driver zl6100_driver = {
 	.driver = {
 		   .name = "zl6100",
 		   },
 	.probe = zl6100_probe,
-	.remove = zl6100_remove,
+	.remove = pmbus_do_remove,
 	.id_table = zl6100_id,
 };