i2c: i801: Drop duplicate NULL check in i801_del_mux()

Since gpiod_remove_lookup_table() is NULL-aware, no need to have this check
in the caller. Drop duplicate NULL check.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

drivers/i2c/busses/i2c-i801.c

@@ -1487,8 +1487,7 @@ static void i801_del_mux(struct i801_priv *priv)
 {
 	if (priv->mux_pdev)
 		platform_device_unregister(priv->mux_pdev);
-	if (priv->lookup)
-		gpiod_remove_lookup_table(priv->lookup);
+	gpiod_remove_lookup_table(priv->lookup);
 }
 
 static unsigned int i801_get_adapter_class(struct i801_priv *priv)