RDMA: Remove 'max_map_per_fmr'

Now that FMR support is gone, this attribute can be deleted from all
places.

Link: https://lore.kernel.org/r/13-v3-f58e6669d5d3+2cf-fmr_removal_jgg@mellanox.com
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/mthca/mthca_provider.c

@@ -118,16 +118,6 @@ static int mthca_query_device(struct ib_device *ibdev, struct ib_device_attr *pr
 	props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
 	props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
 					   props->max_mcast_grp;
-	/*
-	 * If Sinai memory key optimization is being used, then only
-	 * the 8-bit key portion will change.  For other HCAs, the
-	 * unused index bits will also be used for FMR remapping.
-	 */
-	if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
-		props->max_map_per_fmr = 255;
-	else
-		props->max_map_per_fmr =
-			(1 << (32 - ilog2(mdev->limits.num_mpts))) - 1;
 
 	err = 0;
  out: