[MMC] Remove deprecated data->req

Since all users of this have now been eliminated, we can eliminate
the element itself.  MMC host drivers now operate only on the
scatter lists passed to them, rather than needing knowledge of
block devices.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>

drivers/mmc/mmc_block.c

@@ -180,7 +180,6 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
 
 		brq.cmd.arg = req->sector << 9;
 		brq.cmd.flags = MMC_RSP_R1;
-		brq.data.req = req;
 		brq.data.timeout_ns = card->csd.tacc_ns * 10;
 		brq.data.timeout_clks = card->csd.tacc_clks * 10;
 		brq.data.blksz_bits = md->block_bits;

include/linux/mmc/mmc.h

@@ -57,7 +57,6 @@ struct mmc_data {
 	unsigned int		timeout_clks;	/* data timeout (in clocks) */
 	unsigned int		blksz_bits;	/* data block size */
 	unsigned int		blocks;		/* number of blocks */
-	struct request		*req __attribute__((deprecated));/* request structure (use the sg list instead) */
 	unsigned int		error;		/* data error */
 	unsigned int		flags;