LArCalibTest: Remove LArHVTest.
LArHVTest was comparing the results from ILArHVTool with that from the conditions algorithm. We're now trying to get rid of ILArHVTool entirely, so remove this test at this point.
LArHVTest was comparing the results from ILArHVTool with that from the conditions algorithm. We're now trying to get rid of ILArHVTool entirely, so remove this test at this point.