fix_: tmp remove subscription to mailserver available signal to avoid leak (#5684)

protocol/messenger_mailserver.go

@@ -396,16 +396,11 @@ func (m *Messenger) checkForMissingMessagesLoop() {
 	t := time.NewTicker(missingMessageCheckPeriod)
 	defer t.Stop()
 
-	mailserverAvailableSignal := m.SubscribeMailserverAvailable()
-
 	for {
 		select {
 		case <-m.quit:
 			return
 
-		// Wait for mailserver available, also triggered on mailserver change
-		case <-mailserverAvailableSignal:
-
 		case <-t.C:
 
 		}