ide: remove redundant BUG_ON() from [atapi_]reset_pollfunc()

Same BUG_ON() is present inside ide_set_handler().
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide-iops.c

@@ -860,7 +860,6 @@ static ide_startstop_t atapi_reset_pollfunc (ide_drive_t *drive)
 		printk("%s: ATAPI reset complete\n", drive->name);
 	} else {
 		if (time_before(jiffies, hwgroup->poll_timeout)) {
-			BUG_ON(HWGROUP(drive)->handler != NULL);
 			ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL);
 			/* continue polling */
 			return ide_started;
@@ -900,7 +899,6 @@ static ide_startstop_t reset_pollfunc (ide_drive_t *drive)
 
 	if (!OK_STAT(tmp = hwif->INB(IDE_STATUS_REG), 0, BUSY_STAT)) {
 		if (time_before(jiffies, hwgroup->poll_timeout)) {
-			BUG_ON(HWGROUP(drive)->handler != NULL);
 			ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL);
 			/* continue polling */
 			return ide_started;