leds: leds-mc13783: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d06310
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>

drivers/leds/leds-mc13783.c

@@ -371,7 +371,6 @@ static int mc13783_led_remove(struct platform_device *pdev)
 
 	mc13xxx_unlock(dev);
 
-	platform_set_drvdata(pdev, NULL);
 	return 0;
 }