[SCSI] advansys: cleanups

- remove the unneeded advansys.h
- remove the unused advansys_setup()
- make needlessly global functions static

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>