nvme: Makefile: remove dead build rule

Remove dead build rule for drivers/nvme/host/scsi.c which has been
removed by commit ("nvme: Remove SCSI translations").

Signed-off-by: Valentin Rothberg <[e-mail]>
Reviewed-by: Johannes Thumshirn <[e-mail]>
Reviewed-by: Christoph Hellwig <[e-mail]>
Reviewed-by: Keith Busch <[e-mail]>
Signed-off-by: Jens Axboe <[e-mail]>

drivers/nvme/host/Makefile

···
 obj-$(CONFIG_NVME_FC)			+= nvme-fc.o
 
 nvme-core-y				:= core.o
-nvme-core-$(CONFIG_BLK_DEV_NVME_SCSI)	+= scsi.o
 nvme-core-$(CONFIG_NVM)			+= lightnvm.o
 
 nvme-y					+= pci.o