[SCSI] drivers/scsi/FlashPoint.c: cleanups

From: Adrian Bunk <bunk@stusta.de>

This patch contains cleanups including the following:
- remove #ifdef'ed code for other OS's
- remove other unused code
- make needlessly global code static
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>