nvme: Drop useless members of 'struct nvme_ns'

mode_select_num_blocks and mode_select_block_len in 'struct nvme_ns'
are not useful. Drop them.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/drivers/nvme/nvme.c b/drivers/nvme/nvme.c
index c5af4c0..d4b2860 100644
--- a/drivers/nvme/nvme.c
+++ b/drivers/nvme/nvme.c
@@ -718,11 +718,9 @@
 	flbas = id->flbas & NVME_NS_FLBAS_LBA_MASK;
 	ns->flbas = flbas;
 	ns->lba_shift = id->lbaf[flbas].ds;
-	ns->mode_select_num_blocks = le64_to_cpu(id->nsze);
-	ns->mode_select_block_len = 1 << ns->lba_shift;
 	list_add(&ns->list, &ndev->namespaces);
 
-	desc->lba = ns->mode_select_num_blocks;
+	desc->lba = le64_to_cpu(id->nsze);
 	desc->log2blksz = ns->lba_shift;
 	desc->blksz = 1 << ns->lba_shift;
 	desc->bdev = udev;
diff --git a/drivers/nvme/nvme.h b/drivers/nvme/nvme.h
index aa4b3ba..c6aae4d 100644
--- a/drivers/nvme/nvme.h
+++ b/drivers/nvme/nvme.h
@@ -633,8 +633,6 @@
 	int devnum;
 	int lba_shift;
 	u8 flbas;
-	u64 mode_select_num_blocks;
-	u32 mode_select_block_len;
 };
 
 #endif /* __DRIVER_NVME_H__ */