Compiler warnings
Clean up the following classes:
TQCompPlotter TQDefaultPlotter TQGridScanResults TQHistogramUtils TQPathManager TQSampleVisitor.cxx TQSignificanceEvaluator TQPlotter TQTikZPlotter TQCompPlotter TQROOTPlotter ActionScaleMCUncertainties TSHistogramExporter TSStatisticsCalculator TSUtils