Remove unused code

server/backend/sync/memory/pubsub.go

@@ -101,7 +101,7 @@ func (m *PubSub) Subscribe(
 	m.subscriptionsMapMu.Lock()
 	defer m.subscriptionsMapMu.Unlock()
 
-	sub := sync.NewSubscription(subscriber, keys)
+	sub := sync.NewSubscription(subscriber)
 	m.subscriptionMapBySubscriber[sub.SubscriberID()] = sub
 
 	for _, docKey := range keys {

server/backend/sync/pubsub.go

@@ -27,17 +27,15 @@ import (
 type Subscription struct {
 	id         string
 	subscriber types.Client
-	docKeys    []key.Key
 	closed     bool
 	events     chan DocEvent
 }
 
 // NewSubscription creates a new instance of Subscription.
-func NewSubscription(subscriber types.Client, keys []key.Key) *Subscription {
+func NewSubscription(subscriber types.Client) *Subscription {
 	return &Subscription{
 		id:         xid.New().String(),
 		subscriber: subscriber,
-		docKeys:    keys,
 		events:     make(chan DocEvent, 1),
 	}
 }
@@ -59,12 +57,6 @@ func (s *Subscription) Events() chan DocEvent {
 	return s.events
 }
 
-// DocKeys returns an array of the keys of the documents
-// that the subscription is subscribed to.
-func (s *Subscription) DocKeys() []key.Key {
-	return s.docKeys
-}
-
 // Subscriber returns the subscriber of this subscription.
 func (s *Subscription) Subscriber() types.Client {
 	return s.subscriber