ide: remove dead code from __ide_dma_test_irq()

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c
index 6879aaa..4703837 100644
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -611,12 +611,6 @@
 	ide_hwif_t *hwif	= HWIF(drive);
 	u8 dma_stat		= hwif->INB(hwif->dma_status);
 
-#if 0  /* do not set unless you know what you are doing */
-	if (dma_stat & 4) {
-		u8 stat = hwif->INB(IDE_STATUS_REG);
-		hwif->OUTB(hwif->dma_status, dma_stat & 0xE4);
-	}
-#endif
 	/* return 1 if INTR asserted */
 	if ((dma_stat & 4) == 4)
 		return 1;