Fix useless log in cosmics run (#13373)

Author: mconcas

Detectors/ITSMFT/ITS/tracking/src/TrackingInterface.cxx

@@ -235,14 +235,16 @@ void ITSTrackingInterface::run(framework::ProcessingContext& pc)
       mTimeFrame->addPrimaryVertices(vtxVecLoc);
     }
   }
-  LOG(info) << fmt::format(" - rejected {}/{} ROFs: random/mult.sel:{} (seed {}), vtx.sel:{}, upc.sel:{}", cutRandomMult + cutVertexMult + cutUPCVertex, rofspan.size(), cutRandomMult, multEst.lastRandomSeed, cutVertexMult, cutUPCVertex);
-  LOG(info) << fmt::format(" - Vertex seeding total elapsed time: {} ms for {} ({} + {}) vertices found in {}/{} ROFs",
-                           vertexerElapsedTime,
-                           mTimeFrame->getPrimaryVerticesNum(),
-                           mTimeFrame->getTotVertIteration()[0],
-                           o2::its::VertexerParamConfig::Instance().nIterations > 1 ? mTimeFrame->getTotVertIteration()[1] : 0,
-                           rofspan.size() - mTimeFrame->getNoVertexROF(),
-                           rofspan.size());
+  if (mRunVertexer) {
+    LOG(info) << fmt::format(" - rejected {}/{} ROFs: random/mult.sel:{} (seed {}), vtx.sel:{}, upc.sel:{}", cutRandomMult + cutVertexMult + cutUPCVertex, rofspan.size(), cutRandomMult, multEst.lastRandomSeed, cutVertexMult, cutUPCVertex);
+    LOG(info) << fmt::format(" - Vertex seeding total elapsed time: {} ms for {} ({} + {}) vertices found in {}/{} ROFs",
+                             vertexerElapsedTime,
+                             mTimeFrame->getPrimaryVerticesNum(),
+                             mTimeFrame->getTotVertIteration()[0],
+                             o2::its::VertexerParamConfig::Instance().nIterations > 1 ? mTimeFrame->getTotVertIteration()[1] : 0,
+                             rofspan.size() - mTimeFrame->getNoVertexROF(),
+                             rofspan.size());
+  }
 
   if (mOverrideBeamEstimation) {
     LOG(info) << fmt::format(" - Beam position set to: {}, {} from meanvertex object", mTimeFrame->getBeamX(), mTimeFrame->getBeamY());