DataModelTestDataWriteCnv: Remove unneeded custom pool converters.

xAOD objects no longer need custom pool converters.
Remove those that are no longer needed.

Control/DataModelTest/DataModelTestDataReadCnv/src/CCnv.cxx

-/*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
-*/
-
-// Dummy source file so that cmake will know this is a custom converter.

Control/DataModelTest/DataModelTestDataReadCnv/src/CCnv.h

-// This file's extension implies that it's C, but it's really -*- C++ -*-.
-
-/*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
-*/
-
-// $Id$
-/**
- * @file DataModelTestDataReadCnv/src/CCnv.h
- * @author scott snyder <snyder@bnl.gov>
- * @date Apr, 2016
- * @brief POOL coverter for C.
- */
-
-
-#ifndef DATAMODELTESTDATAREADCNV_CCNV_H
-#define DATAMODELTESTDATAREADCNV_CCNV_H
-
-
-#include "DataModelTestDataCommon/C.h"
-#include "AthenaPoolCnvSvc/T_AthenaPoolxAODCnv.h"
-
-
-typedef T_AthenaPoolxAODCnv<DMTest::C> CCnv;
-
-
-#endif // not DATAMODELTESTDATAREADCNV_CCNV_H

Control/DataModelTest/DataModelTestDataReadCnv/src/CVecCnv.cxx

-/*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
-*/
-
-// Dummy source file so that cmake will know this is a custom converter.

Control/DataModelTest/DataModelTestDataReadCnv/src/CVecCnv.h

-// This file's extension implies that it's C, but it's really -*- C++ -*-.
-
-/*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
-*/
-
-// $Id$
-/**
- * @file DataModelTestDataReadCnv/src/CVecCnv.h
- * @author scott snyder <snyder@bnl.gov>
- * @date Apr, 2016
- * @brief POOL coverter for CVec.
- */
-
-
-#ifndef DATAMODELTESTDATAREADCNV_CVECCNV_H
-#define DATAMODELTESTDATAREADCNV_CVECCNV_H
-
-
-#include "DataModelTestDataCommon/CVec.h"
-#include "AthenaPoolCnvSvc/T_AthenaPoolxAODCnv.h"
-
-
-typedef T_AthenaPoolxAODCnv<DMTest::CVec> CVecCnv;
-
-
-#endif // not DATAMODELTESTDATAREADCNV_CVECCNV_H

Control/DataModelTest/DataModelTestDataWriteCnv/src/CAuxContainerCnv.cxx

-/*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
-*/
-
-// Dummy source file so that cmake will know this is a custom converter.

Control/DataModelTest/DataModelTestDataWriteCnv/src/CAuxContainerCnv.h

-// This file's extension implies that it's C, but it's really -*- C++ -*-.
-
-/*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
-*/
-
-// $Id$
-/**
- * @file CAuxContainerCnv.h
- * @author scott snyder <snyder@bnl.gov>
- * @date Apr, 2016
- * @brief POOL converter for CAuxContainer.
- */
-
-
-#ifndef DATAMODELTESTDATAREADCNV_CAUXCONTAINERCNV_H
-#define DATAMODELTESTDATAREADCNV_CAUXCONTAINERCNV_H
-
-
-#include "DataModelTestDataCommon/CAuxContainer.h"
-#include "AthenaPoolCnvSvc/T_AthenaPoolCustomCnv.h"
-#include "AthenaPoolCnvSvc/T_AthenaPoolAuxContainerCnv.h"
-
-
-typedef T_AthenaPoolAuxContainerCnv<DMTest::CAuxContainer> CAuxContainerCnv;
-
-
-#endif // not DATAMODELTESTDATAREADCNV_CAUXCONTAINERCNV_H