ALSA: atmel: Remove redundant platform_set_drvdata()

Commit 0998d063 (device-core: Ensure drvdata = NULL when no
driver is bound) removes the need to set driver data field to
NULL.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/atmel/abdac.c

@@ -583,8 +583,6 @@ static int atmel_abdac_remove(struct platform_device *pdev)
 	free_irq(dac->irq, dac);
 	snd_card_free(card);
 
-	platform_set_drvdata(pdev, NULL);
-
 	return 0;
 }
 

sound/atmel/ac97c.c

@@ -1199,8 +1199,6 @@ static int atmel_ac97c_remove(struct platform_device *pdev)
 	snd_card_set_dev(card, NULL);
 	snd_card_free(card);
 
-	platform_set_drvdata(pdev, NULL);
-
 	return 0;
 }