Add default implementation to SessionListener

libraries/push/impl/src/main/kotlin/io/element/android/libraries/push/impl/DefaultPushService.kt

@@ -108,10 +108,6 @@ class DefaultPushService(
         sessionObserver.addListener(this)
     }
 
-    override suspend fun onSessionCreated(userId: String) {
-        // Nothing to do
-    }
-
     /**
      * The session has been deleted.
      * In this case, this is not necessary to unregister the pusher from the homeserver,

libraries/push/impl/src/main/kotlin/io/element/android/libraries/push/impl/notifications/conversations/DefaultNotificationConversationService.kt

@@ -59,8 +59,6 @@ class DefaultNotificationConversationService(
 
     init {
         sessionObserver.addListener(object : SessionListener {
-            override suspend fun onSessionCreated(userId: String) = Unit
-
             override suspend fun onSessionDeleted(userId: String, wasLastSession: Boolean) {
                 onSessionLogOut(SessionId(userId))
             }