ALSA: Remove the rest of *_set_drvdata(NULL) calls

A few calls are still left in parport drivers after this commit, which
I'm not quite sure yet.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/spi/at73c213.c

@@ -1070,7 +1070,6 @@ out:
 
 	ssc_free(chip->ssc);
 	snd_card_free(card);
-	dev_set_drvdata(&spi->dev, NULL);
 
 	return 0;
 }