CLEANUP: Remove some native-code compile warnings
Addressed the following compile warnings (related to Issue #6):

fusion_sdk/calvin_files/data/src/CDFProbeSetInformation.cpp:109:15:
warning: comparison of unsigned expression < 0 is always false
         [-Wtautological-compare]
   if (groupIdx < 0 || groupIdx >= groupCnt)

fusion_sdk/calvin_files/data/src/GenericData.cpp:388:18:
warning: comparison of unsigned expression >= 0 is always true
         [-Wtautological-compare]
   if (dataSetIdx >= 0 && (int32_t)dataSetIdx < dch->GetDataSetCnt())

fusion_sdk/file/BPMAPFileData.cpp:372:16:
warning: unused variable 'probeIn' [-Wunused-variable]
   unsigned char
   probeIn[PROBE_STORAGE_BUFFER_LENGTH]="";

fusion_sdk/file/BPMAPFileData.cpp:373:7:
warning: unused variable 'probeOut' [-Wunused-variable]
  char probeOut[probeBufSize]="";