Remove old method used for unsafe deletions detection

Author: alex-kulakov

Orm/Xtensive.Orm/Orm/Upgrade/Internals/SchemaComparer.cs

@@ -125,7 +125,7 @@ private static IList<NodeAction> GetUnsafeActions(ICollection<NodeAction> action
       GetUnsafeColumnTypeChanges(actions, hints, unsafeActions);
       GetUnsafeColumnRemovals(actions, hints, unsafeActions);
       GetUnsafeTableRemovals(actions, hints, unsafeActions);
-      GetUnsafeDataActions(actions, hints, unsafeActions);
+      GetCrossHierarchicalMovements(actions, unsafeActions);
 
       return unsafeActions;
     }
@@ -225,33 +225,14 @@ private static void GetUnsafeTableRemovals(IEnumerable<NodeAction> actions, IEnu
         .ForEach(output.Add);
     }
 
-    private static void GetUnsafeDataActions(IEnumerable<NodeAction> actions, IEnumerable<UpgradeHint> hints, ICollection<NodeAction> output)
-    {
-      GetCrossHierarchicalMovements(actions, output);
-      GetTableRecreateDataLossActions(actions, output);
-    }
-
     private static void GetCrossHierarchicalMovements(IEnumerable<NodeAction> actions, ICollection<NodeAction> output)
     {
       (from action in actions.OfType<DataAction>()
         let deleteDataHint = action.DataHint as DeleteDataHint
-        where deleteDataHint!=null && (deleteDataHint.PostCopy || deleteDataHint.TableChangedOwner)
+        where deleteDataHint!=null && deleteDataHint.IsUnsafe
         select action).ForEach(output.Add);
     }
 
-    private static void GetTableRecreateDataLossActions(IEnumerable<NodeAction> actions, ICollection<NodeAction> output)
-    {
-      actions.OfType<DataAction>()
-        .Select(da => new {
-          DataAction = da,
-          Difference = da.Difference as NodeDifference,
-          DeleteDataHint = da.DataHint as DeleteDataHint
-        })
-        .Where(a => a.DeleteDataHint != null && a.Difference != null && a.Difference.MovementInfo.HasFlag(MovementInfo.Removed | MovementInfo.Created))
-        .Select(a => a.DataAction)
-        .ForEach(output.Add);
-    }
-
     private static bool IsTypeChangeAction(PropertyChangeAction action)
     {
       return action.Properties.ContainsKey("Type")