Remove not well described is_event_base

In case of CbmMCDataManager the second variable is connected to legacy mode, not E-b-E settings. The default constructor have exactly the needed properties so no reason why to use specific one.

macro/PWG/common/production/run_analysis_tree_maker_json_config.C

@@ -97,7 +97,7 @@ void run_analysis_tree_maker_json_config(TString traPath = "test", TString rawPa
   // ------------------------------------------------------------------------
 
   // ----- Mc Data Manager   ------------------------------------------------
-  auto* mcManager = new CbmMCDataManager("MCManager", is_event_base);
+  auto* mcManager = new CbmMCDataManager();
   mcManager->AddFile(traFile);
   run->AddTask(mcManager);
   // ------------------------------------------------------------------------