power: bq25890: remove redundant I2C bus check

regmap initialization will check I2C adapter functionality.
Remove redundant check in the driver.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/supply/bq25890_charger.c

@@ -878,17 +878,11 @@ static int bq25890_fw_probe(struct bq25890_device *bq)
 static int bq25890_probe(struct i2c_client *client,
 			 const struct i2c_device_id *id)
 {
-	struct i2c_adapter *adapter = client->adapter;
 	struct device *dev = &client->dev;
 	struct bq25890_device *bq;
 	int ret;
 	int i;
 
-	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
-		dev_err(dev, "No support for SMBUS_BYTE_DATA\n");
-		return -ENODEV;
-	}
-
 	bq = devm_kzalloc(dev, sizeof(*bq), GFP_KERNEL);
 	if (!bq)
 		return -ENOMEM;