ata: drop unused ata_id_to_hd_driveid()

This function was renamed from ide_id_to_hd_driveid() and moved from
drivers/ide/ to <linux/ata.h> but it never got used by libata, thus it
became useless after drivers/ide/ removal...
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>

include/linux/ata.h

@@ -16,7 +16,6 @@
 #include <linux/bits.h>
 #include <linux/string.h>
 #include <linux/types.h>
-#include <asm/byteorder.h>
 
 /* defines only for the constants which don't work well as enums */
 #define ATA_DMA_BOUNDARY	0xffffUL
@@ -1067,26 +1066,6 @@ static inline bool ata_id_is_lba_capacity_ok(u16 *id)
 	return false;	/* LBA capacity value may be bad */
 }
 
-static inline void ata_id_to_hd_driveid(u16 *id)
-{
-#ifdef __BIG_ENDIAN
-	/* accessed in struct hd_driveid as 8-bit values */
-	id[ATA_ID_MAX_MULTSECT]	 = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]);
-	id[ATA_ID_CAPABILITY]	 = __cpu_to_le16(id[ATA_ID_CAPABILITY]);
-	id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]);
-	id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]);
-	id[ATA_ID_MULTSECT]	 = __cpu_to_le16(id[ATA_ID_MULTSECT]);
-
-	/* as 32-bit values */
-	*(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
-	*(u32 *)&id[ATA_ID_SPG]		 = ata_id_u32(id, ATA_ID_SPG);
-
-	/* as 64-bit value */
-	*(u64 *)&id[ATA_ID_LBA_CAPACITY_2] =
-		ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
-#endif
-}
-
 static inline bool ata_ok(u8 status)
 {
 	return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))