libata: kill ATA_ENABLE_PATA

The ATA_ENABLE_PATA define was never meant to be permanent, and in
recent kernels, it's already been unconditionally enabled.  Remove.
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/ata/ata_piix.c

@@ -164,7 +164,6 @@ static void ich_set_dmamode (struct ata_port *ap, struct ata_device *adev);
 static unsigned int in_module_init = 1;
 
 static const struct pci_device_id piix_pci_tbl[] = {
-#ifdef ATA_ENABLE_PATA
 	/* Intel PIIX3 for the 430HX etc */
 	{ 0x8086, 0x7010, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_mwdma },
 	/* Intel PIIX4 for the 430TX/440BX/MX chipset: UDMA 33 */
@@ -204,7 +203,6 @@ static const struct pci_device_id piix_pci_tbl[] = {
 	/* ICH7/7-R (i945, i975) UDMA 100*/
 	{ 0x8086, 0x27DF, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_133 },
 	{ 0x8086, 0x269E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
-#endif
 
 	/* NOTE: The following PCI ids must be kept in sync with the
 	 * list in drivers/pci/quirks.c.

include/linux/libata.h

@@ -54,8 +54,6 @@
 #undef ATA_VERBOSE_DEBUG	/* yet more debugging output */
 #undef ATA_IRQ_TRAP		/* define to ack screaming irqs */
 #undef ATA_NDEBUG		/* define to disable quick runtime checks */
-#define ATA_ENABLE_PATA		/* define to enable PATA support in some
-				 * low-level drivers */
 
 
 /* note: prints function name for you */