Fixed: Don't move seeding torrents in Synology Download Station

(cherry picked from commit 3cd33d3f44097b4cb4fb291bca70a0aa53c4b844)

Closes #3705

src/NzbDrone.Core/Download/Clients/DownloadStation/TorrentDownloadStation.cs

@@ -96,7 +96,7 @@ namespace NzbDrone.Core.Download.Clients.DownloadStation
                     SeedRatio = GetSeedRatio(torrent),
                     Status = GetStatus(torrent),
                     Message = GetMessage(torrent),
-                    CanMoveFiles = IsCompleted(torrent),
+                    CanMoveFiles = IsFinished(torrent),
                     CanBeRemoved = IsFinished(torrent)
                 };
 
@@ -216,11 +216,6 @@ namespace NzbDrone.Core.Download.Clients.DownloadStation
             return torrent.Status == DownloadStationTaskStatus.Finished;
         }
 
-        protected bool IsCompleted(DownloadStationTask torrent)
-        {
-            return torrent.Status == DownloadStationTaskStatus.Seeding || IsFinished(torrent) || (torrent.Status == DownloadStationTaskStatus.Waiting && torrent.Size != 0 && GetRemainingSize(torrent) <= 0);
-        }
-
         protected string GetMessage(DownloadStationTask torrent)
         {
             if (torrent.StatusExtra != null)