Merge branch 'ewelina-21.0-patch-50797' into '21.0'

remove duplicated line

See merge request atlas/athena!62295

Event/xAOD/xAODEventInfoCnv/src/EventInfoCnvTool.cxx

@@ -155,7 +155,6 @@ namespace xAODMaker {
 	 //or for Data+MC overlay
          if( xaod->eventType( xAOD::EventInfo::IS_SIMULATION ) || forceMCInfoCopy ) {
             xaod->setMCChannelNumber( aod->event_type()->mc_channel_number() );
-            xaod->setMCEventNumber( aod->event_type()->mc_event_number() );
             // Special case: sometimes in MC we have not yet copied the run number
             //  into the channel number.  The channel number comes out 0, even
             //  when it should be set.  To protect, if we get zero use the run #.