Remove tape session error codes (#94)

ReleaseNotes.md

tapeserver/castor/tape/tapeserver/daemon/DiskReadTask.cpp

...server/castor/tape/tapeserver/daemon/DiskReadTaskTest.cpp

tapeserver/castor/tape/tapeserver/daemon/DiskWriteTask.cpp

...erver/castor/tape/tapeserver/daemon/DiskWriteTaskTest.cpp

...ver/castor/tape/tapeserver/daemon/DiskWriteThreadPool.cpp

...castor/tape/tapeserver/daemon/DiskWriteThreadPoolTest.cpp

tapeserver/castor/tape/tapeserver/daemon/MemBlock.hpp

...r/castor/tape/tapeserver/daemon/MigrationReportPacker.cpp

...r/castor/tape/tapeserver/daemon/MigrationReportPacker.hpp

...rver/castor/tape/tapeserver/daemon/RecallReportPacker.cpp

...rver/castor/tape/tapeserver/daemon/RecallReportPacker.hpp

.../castor/tape/tapeserver/daemon/RecallTaskInjectorTest.cpp

...r/castor/tape/tapeserver/daemon/ReportPackerInterface.hpp

...er/castor/tape/tapeserver/daemon/TapeReadSingleThread.cpp

tapeserver/castor/tape/tapeserver/daemon/TapeReadTask.hpp

...r/castor/tape/tapeserver/daemon/TapeWriteSingleThread.cpp

tapeserver/castor/tape/tapeserver/daemon/TapeWriteTask.cpp