Excise previous server extensions code

OpenRA.Game/Network/SyncReport.cs

@@ -38,7 +38,6 @@ namespace OpenRA.Network
 			report.Traits.Clear();
 			foreach (var a in orderManager.world.Queries.WithTraitMultiple<object>())
 			{
-				if (a.Trait is ITraitNotSynced ) continue;
 				var sync = Sync.CalculateSyncHash(a.Trait);
 				if (sync != 0)
 					report.Traits.Add(new TraitReport()