leds: lt3593: do not rewrite .of_node of new LED device to wrong value

The devm_led_classdev_register_ext is given init_data with fwnode set,
so the LED core sets .of_node of the new LED classdev correctly.

Do not rewrite this value to parent of_node.

Signed-off-by: Marek Behún <[e-mail]>
Cc: Daniel Mack <[e-mail]>
Signed-off-by: Pavel Machek <[e-mail]>

drivers/leds/leds-lt3593.c

···
 		return ret;
 	}
 
-	led_data->cdev.dev->of_node = dev->of_node;
 	platform_set_drvdata(pdev, led_data);
 
 	return 0;