[LYN-3145] Removed unnecessary spam message from legacy CEntityObject class when entering game mode.

Code/Sandbox/Editor/Objects/EntityObject.cpp

@@ -1277,7 +1277,6 @@ void CEntityObject::OnEvent(ObjectEvent event)
         break;
     }
     default:
-        AZ_TracePrintf("CEntityObject", "Unhandled object event: %d", event);
         break;
     }
 }