[libata] PATA drivers: remove ATA_FLAG_SRST

This flag only has meaning in old-EH drivers, and these drivers have
already been converted to the new EH.  Remove.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/ata/pata_rz1000.c b/drivers/ata/pata_rz1000.c
index a3488b4..7632fcb 100644
--- a/drivers/ata/pata_rz1000.c
+++ b/drivers/ata/pata_rz1000.c
@@ -133,7 +133,7 @@
 	static int printed_version;
 	static const struct ata_port_info info = {
 		.sht = &rz1000_sht,
-		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
+		.flags = ATA_FLAG_SLAVE_POSS,
 		.pio_mask = 0x1f,
 		.port_ops = &rz1000_port_ops
 	};