Take the SessionCreatedEvent class out

Author: zguesmi

src/main/java/com/iexec/worker/pubsub/SessionCreatedEvent.java

@@ -0,0 +1,12 @@
+package com.iexec.worker.pubsub;
+
+import lombok.NoArgsConstructor;
+
+/**
+ * Publish this event when a new STOMP session
+ * is created to notify subscribers.
+ */
+@NoArgsConstructor
+public class SessionCreatedEvent {
+    
+}

src/main/java/com/iexec/worker/pubsub/StompClient.java

@@ -180,13 +180,4 @@ public void handleTransportError(StompSession session, Throwable exception) {
     private class SessionRequestEvent {
 
     }
-
-    /**
-     * Publish this event when a new session
-     * is created to notify subscribers.
-     */
-    @NoArgsConstructor
-    public class SessionCreatedEvent {
-        
-    }
 }

src/main/java/com/iexec/worker/pubsub/SubscriptionService.java

@@ -7,7 +7,6 @@
 
 import com.iexec.common.notification.TaskNotification;
 import com.iexec.worker.config.WorkerConfigurationService;
-import com.iexec.worker.pubsub.StompClient.SessionCreatedEvent;
 
 import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.context.event.EventListener;