NVM Express: Remove unneeded include of linux/version.h from nvme.c

There's no need for drivers/block/nvme.c to include linux/version.h,
so remove the include.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>