feat(core): removed static null from IdentifiedDomainObject class | removed DomainEventClassMap

DomainEventClassMap was unused

Author: rmolinamir

lib/core/src/common/IdentifiedDomainObject.ts

@@ -5,6 +5,4 @@ import Identity from './Identity';
  */
 export default abstract class IdentifiedDomainObject<Id extends Identity> {
   public abstract id: Id;
-
-  public static null: Identity;
 }

lib/core/src/domain_events/DomainEventClassMap.ts

@@ -1,5 +1,4 @@
 export { default as DomainEvent } from './DomainEvent';
-export { default as DomainEventClassMap } from './DomainEventClassMap';
 export { default as DomainEventMap } from './DomainEventMap';
 export { default as DomainEventPublisher } from './DomainEventPublisher';
 export { default as EventSink } from './EventSink';