ata: fix obviously wrong comment

Also remove the now-useless debug printouts which are supposed to
tell us when the scan starts and ends.
Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

drivers/ata/libata-core.c

@@ -6110,13 +6110,11 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht)
 			ata_port_printk(ap, KERN_INFO, "DUMMY\n");
 	}
 
-	/* perform each probe synchronously */
-	DPRINTK("probe begin\n");
+	/* perform each probe asynchronously */
 	for (i = 0; i < host->n_ports; i++) {
 		struct ata_port *ap = host->ports[i];
 		async_schedule(async_port_probe, ap);
 	}
-	DPRINTK("probe end\n");
 
 	return 0;
 }