//****************************************************************************
//                           --- DemoUnload ---
//
// Purpose: This code is copied from NT DDK sample of generic driver. NT call
//          this routine during driver unload
//   Input: IN PDRIVER_OBJECT DriverObject - Pointer to the driver object
//  Output: none
//    Note: Typical CS aware driver will deregister client and detach from CS
//          in this routine. This sample just deregister the client. Please
//          refer to DoCardServices() function above for code which detach from
//          CS
//****************************************************************************