[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_sil680.c b/drivers/ata/pata_sil680.c
index 440e2cb..b7dfb95 100644
--- a/drivers/ata/pata_sil680.c
+++ b/drivers/ata/pata_sil680.c
@@ -343,7 +343,7 @@
 {
 	static const struct ata_port_info info = {
 		.sht = &sil680_sht,
-		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
+		.flags = ATA_FLAG_SLAVE_POSS,
 		.pio_mask = 0x1f,
 		.mwdma_mask = 0x07,
 		.udma_mask = 0x7f,
@@ -351,7 +351,7 @@
 	};
 	static const struct ata_port_info info_slow = {
 		.sht = &sil680_sht,
-		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
+		.flags = ATA_FLAG_SLAVE_POSS,
 		.pio_mask = 0x1f,
 		.mwdma_mask = 0x07,
 		.udma_mask = 0x3f,