scsi: nsp_cs: drop redundant MODULE_LICENSE ifdef

The MODULE_LICENSE macro is unconditionally defined in module.h, no need to
ifdef its use.

Link: https://lore.kernel.org/r/20191105085609.2338-2-johan@kernel.org


Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>