ata: ata_piix: Remove useless comment in piix_init_sidpr()

Remove the comment using the term "blacklist" from piix_init_sidpr().
That comment is useless given that the function piix_no_sidpr() name is
clear about what is being checked.

Signed-off-by: Damien Le Moal <[email protected]>
Reviewed-by: Niklas Cassel <[email protected]>
Reviewed-by: Igor Pylypiv <[email protected]>

Author: damien-lemoal

drivers/ata/ata_piix.c

@@ -1446,7 +1446,6 @@ static int piix_init_sidpr(struct ata_host *host)
 		if (hpriv->map[i] == IDE)
 			return 0;
 
-	/* is it blacklisted? */
 	if (piix_no_sidpr(host))
 		return 0;