lib/model: Trigger pulls instead of pulling periodically

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/4340

lib/model/folder.go

@@ -50,8 +50,7 @@ func (f *folder) DelayScan(next time.Duration) {
 	f.scan.Delay(next)
 }
 
-func (f *folder) IndexUpdated() {
-}
+func (f *folder) IndexUpdated() {}
 
 func (f *folder) IgnoresUpdated() {
 	if f.FSWatcherEnabled {
@@ -59,6 +58,8 @@ func (f *folder) IgnoresUpdated() {
 	}
 }
 
+func (f *folder) SchedulePull() {}
+
 func (f *folder) Jobs() ([]string, []string) {
 	return nil, nil
 }