Fix unused variables, parameters, values

Fixes errors from the following Clang-Tidy categories:

- `clang-analyzer-deadcode.DeadStores`
- `clang-diagnostic-unused-parameter`
- `clang-diagnostic-unused-variable`

Most errors are fixed temporarily by commenting out the unused bits and by adding a `FIXME: unused` comment.

The final fix is to either remove the unused bits or to fix the bugs which has to be done by someone who knows the intended behaviour.

Author: vkucera

PWGHF/HFC/Macros/FitCorrel.C

@@ -259,13 +259,13 @@ void fitCorrelDs(const TString& cfgFileName = "config_CorrAnalysis.json")
       corrFitter[iBinPtHad][iBinPtCand]->setFuncType(static_cast<DhCorrelationFitter::FunctionType>(fitFunc[iBinPtCand]));
       corrFitter[iBinPtHad][iBinPtCand]->fitting(kTRUE, kTRUE); // the first term is for drawing the fit functions, the second argument is useExternalParams
 
-      TF1* fFit = corrFitter[iBinPtHad][iBinPtCand]->getFitFunction();
+      // TF1* fFit = corrFitter[iBinPtHad][iBinPtCand]->getFitFunction(); // FIXME: unused
 
       // Title of the histogram
       auto* pttext = new TPaveText(0.15, 0.9, 0.85, 0.95, "NDC");
       pttext->SetFillStyle(0);
       pttext->SetBorderSize(0);
-      TText* tpT = pttext->AddText(0., 0.8, Form("%.0f < p_{T}^{D_{s}} < %.0f GeV/c, p_{T}^{assoc} > %.1f GeV/c", binsPtCandIntervals[iBinPtCand], binsPtCandIntervals[iBinPtCand + 1], binsPtHadIntervals[iBinPtHad]));
+      pttext->AddText(0., 0.8, Form("%.0f < p_{T}^{D_{s}} < %.0f GeV/c, p_{T}^{assoc} > %.1f GeV/c", binsPtCandIntervals[iBinPtCand], binsPtCandIntervals[iBinPtCand + 1], binsPtHadIntervals[iBinPtHad]));
       // pttext -> Draw("same");
 
       // Fill the histograms with the fit parameters

PWGHF/TableProducer/mcPidTof.cxx

@@ -604,7 +604,7 @@ struct TofEventTime {
           // Reset the event time
           eventTime = 0.f;
           sumOfWeights = 0.f;
-          weight = 0.f;
+          // weight = 0.f; // FIXME: unused
           // Remove the bias on TOF ev. time
           if constexpr (RemoveTofEvTimeBias) {
             evTimeMakerTOF.removeBias<TrksWtof::iterator, filterForTOFEventTime>(trk, nGoodTracksForTOF, t0TOF[0], t0TOF[1], 2);