refactor code.

remove unused revocation event publishers.

Author: dushaniw

components/apimgt/org.wso2.carbon.apimgt.eventing.hub/src/main/java/org/wso2/carbon/apimgt/eventing/hub/EventHubEventPublisherFactory.java

@@ -53,8 +53,6 @@ public void configure(Map<String, String> properties) {
     public EventPublisher getEventPublisher(EventPublisherType eventPublisherType) {
         switch (eventPublisherType) {
             case TOKEN_REVOCATION:
-            case TOKEN_REVOKE_BY_CONSUMER_KEY_EVENT:
-            case TOKEN_REVOKE_BY_SUBJECT_ENTITY_EVENT:
             case ASYNC_WEBHOOKS:
                 return new EventHubEventStreamServiceEventPublisher();
             default:

components/apimgt/org.wso2.carbon.apimgt.eventing/src/main/java/org/wso2/carbon/apimgt/eventing/EventPublisherType.java

@@ -29,8 +29,6 @@ public enum EventPublisherType {
     CACHE_INVALIDATION,
     GLOBAL_CACHE_INVALIDATION,
     TOKEN_REVOCATION,
-    TOKEN_REVOKE_BY_CONSUMER_KEY_EVENT,
-    TOKEN_REVOKE_BY_SUBJECT_ENTITY_EVENT,
     ASYNC_WEBHOOKS,
     ORGANIZATION_PURGE
 }

components/apimgt/org.wso2.carbon.apimgt.gateway/src/main/java/org/wso2/carbon/apimgt/gateway/jwt/RevokedJWTTokensRetriever.java

@@ -124,6 +124,7 @@ private void loadRevokedJWTTokens(RevokedEventsDTO revokedEventsDTO) {
     }
 
     private void loadRevokedConsumerKeys(RevokedEventsDTO revokedEventsDTO) {
+
         if (revokedEventsDTO.getRevokedConsumerKeyList() != null && !revokedEventsDTO.getRevokedConsumerKeyList()
                 .isEmpty()) {
             for (RevokedJWTConsumerKeyDTO revokedConKeyDTO : revokedEventsDTO.getRevokedConsumerKeyList()) {

components/apimgt/org.wso2.carbon.apimgt.impl/src/main/java/org/wso2/carbon/apimgt/impl/utils/APIUtil.java

@@ -422,10 +422,6 @@ public static void init() throws APIManagementException {
                     eventPublisherFactory.getEventPublisher(EventPublisherType.KEY_TEMPLATE));
             eventPublishers.putIfAbsent(EventPublisherType.KEYMGT_EVENT,
                     eventPublisherFactory.getEventPublisher(EventPublisherType.KEYMGT_EVENT));
-            eventPublishers.putIfAbsent(EventPublisherType.TOKEN_REVOKE_BY_CONSUMER_KEY_EVENT,
-                    eventPublisherFactory.getEventPublisher(EventPublisherType.TOKEN_REVOKE_BY_CONSUMER_KEY_EVENT));
-            eventPublishers.putIfAbsent(EventPublisherType.TOKEN_REVOKE_BY_SUBJECT_ENTITY_EVENT,
-                    eventPublisherFactory.getEventPublisher(EventPublisherType.TOKEN_REVOKE_BY_SUBJECT_ENTITY_EVENT));
         } catch (EventPublisherException e) {
             log.error("Could not initialize the event publishers. Events might not be published properly.");
             throw new APIManagementException(e);