ice: remove incorrect comment

Copy paste issue left a comment for this structure that has nothing
to do with FW alignment; remove the comment.

Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>