iio: light: jsa1212: remove unneeded i2c check functionality test

This driver does not call i2c_smbus_read|write_byte_data(),
so remove the corresponding functionality test. It uses regmap
to handle byte transfers transparently.

Signed-off-by: Alison Schofield <[e-mail]>
Reviewed-by:Kuppuswamy Sathyanarayanan <[e-mail]>
Reviewed-by: Matt Ranostay <[e-mail]>
Signed-off-by: Jonathan Cameron <[e-mail]>

drivers/iio/light/jsa1212.c

···
 	struct regmap *regmap;
 	int ret;
 
-	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
-		return -EOPNOTSUPP;
-
 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
 	if (!indio_dev)
 		return -ENOMEM;