Finish phk's previous removal of BIO_ORDERED, all code that

depended on ATA_FLUSHCACHE_ON is now useless.

sys/dev/ata/ata-disk.c

@@ -571,10 +571,6 @@ ad_interrupt(struct ad_request *request)
     struct ad_softc *adp = request->softc;
     int dma_stat = 0;
 
-#ifdef ATA_FLUSHCACHE_ON 
-    if (request->flags & ADR_F_FLUSHCACHE)
-	goto finish;
-#endif
     /* finish DMA transfer */
     if (request->flags & ADR_F_DMA_USED)
 	dma_stat = ata_dmadone(adp->device->channel);

sys/dev/ata/ata-disk.h

@@ -43,7 +43,6 @@ struct ad_request {
 #define		ADR_F_DMA_USED		0x0004
 #define		ADR_F_QUEUED		0x0008
 #define		ADR_F_FORCE_PIO		0x0010
-#define		ADR_F_FLUSHCACHE	0x0020
 
     caddr_t			data;		/* pointer to data buf */
     struct bio			*bp;		/* associated bio ptr */