ide: remove needless drive->present checks from device drivers

Remove needless drive->present checks from ->probe methods
(device model takes care of that).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index accb53b..607af5d 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -2109,10 +2109,10 @@
 
 	if (!strstr("ide-cdrom", drive->driver_req))
 		goto failed;
-	if (!drive->present)
-		goto failed;
+
 	if (drive->media != ide_cdrom && drive->media != ide_optical)
 		goto failed;
+
 	/* skip drives that we were told to ignore */
 	if (ignore != NULL) {
 		if (strstr(ignore, drive->name)) {