nvme: remove the ifdef around nvme_nvm_ioctl

[ Upstream commit 3f98bcc58cd5f1e4668db289dcab771874cc0920 ]

We already have a proper stub if lightnvm is not enabled, so don't bother
with the ifdef.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NKeith Busch <keith.busch@intel.com>
Reviewed-by: NChaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>

drivers/nvme/host/core.c

@@ -1311,10 +1311,8 @@ static int nvme_ns_ioctl(struct nvme_ns *ns, unsigned cmd, unsigned long arg)
 	case NVME_IOCTL_SUBMIT_IO:
 		return nvme_submit_io(ns, (void __user *)arg);
 	default:
-#ifdef CONFIG_NVM
 		if (ns->ndev)
 			return nvme_nvm_ioctl(ns, cmd, arg);
-#endif
 		if (is_sed_ioctl(cmd))
 			return sed_ioctl(ns->ctrl->opal_dev, cmd,
 					 (void __user *) arg);