[#83] container: Remove outdated migration code

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>

container/container_contract.go

@@ -94,26 +94,6 @@ func _deploy(data any, isUpdate bool) {
 	if isUpdate {
 		args := data.([]any)
 		common.CheckVersion(args[len(args)-1].(int))
-
-		it := storage.Find(ctx, []byte{}, storage.None)
-		for iterator.Next(it) {
-			item := iterator.Value(it).(struct {
-				key   []byte
-				value []byte
-			})
-
-			// Migrate container.
-			if len(item.key) == containerIDSize {
-				storage.Delete(ctx, item.key)
-				storage.Put(ctx, append([]byte{containerKeyPrefix}, item.key...), item.value)
-			}
-
-			// Migrate owner-cid map.
-			if len(item.key) == 25 /* owner id size */ +containerIDSize {
-				storage.Delete(ctx, item.key)
-				storage.Put(ctx, append([]byte{ownerKeyPrefix}, item.key...), item.value)
-			}
-		}
 		return
 	}