apply digi time convention for simulations

sim/detectors/trd/CbmTrdModuleSim2D.cxx

@@ -561,8 +561,7 @@ void CbmTrdModuleSim2D::AddDigi(Int_t pad, Double_t* charge, Double_t time /*, D
   // make digi
   CbmTrdDigi *digi(NULL), *sdigi(NULL);
   CbmMatch* digiMatch(NULL);
-  digi = new CbmTrdDigi(pad, charge[0], charge[1],
-                        ULong64_t(TMath::Ceil(time / CbmTrdDigi::Clk(CbmTrdDigi::eCbmTrdAsicType::kFASP))));
+  digi = new CbmTrdDigi(pad, charge[0], charge[1], uint64_t(time));
   digi->SetAddressModule(fModAddress);  // may not be needed in the future
   digiMatch          = new CbmMatch();
   Double_t weighting = fChmbPar->EfCkeV(charge[0] * 0.1);  // save th. energy which is seen by pads;