scsi: bfa: Remove unused structure builders

bfa has a large set of structure builders, of which only about 60% are
used; remove the rest.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Link: https://lore.kernel.org/r/20241117135215.38771-2-linux@treblig.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

Author: Dr. David Alan Gilbert