Name
rio_unregister_scan — 
     removes enumeration/discovery method from mport
 
Arguments
- mport_id
- 
     mport device ID for which fabric scan routine has to be
     unregistered (RIO_MPORT_ANY = apply to all mports that use
     the specified scan_ops)
     
- scan_ops
- 
     enumeration/discovery operations structure
     
Description
   Removes enumeration or discovery method assigned to the specified mport
   device. If RIO_MPORT_ANY is specified, removes the specified operations from
   all mports that have them attached.