Update jetChargedV2.cxx

Author: YubiaoWang

PWGJE/Tasks/jetChargedV2.cxx

@@ -612,17 +612,7 @@ struct JetChargedV2 {
   bool applyMCCollisionCuts(TMCColl const& mccollision, TCollisions const& collisions, bool fillHistograms = false, bool isWeighted = false, float eventWeight = 1.0)
   {
     float centrality = -1.0;
-    switch (centralityMode) {
-      case 1:
-        centrality = mccollision.centFT0M();
-        break;
-      case 2:
-        centrality = mccollision.centFT0A();
-        break;
-      default:
-        centrality = mccollision.centFT0C();
-        break;
-    }
+    centrality = mccollision.centFT0M();
 
     if (fillHistograms) {
       registry.fill(HIST("h_mccollisions"), 0.5);