sg: remove an unused variable

The 'data_dir' variable is not used in sg_common_write(), hence
remove this variable.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
1 file changed