Attics no longer needed

Change-Id: Icaed6bcfe9190e098e52689c86668d9af0fa8deb
diff --git a/xos/models/attic/header.py b/xos/models/attic/header.py
deleted file mode 100644
index ad5bb33..0000000
--- a/xos/models/attic/header.py
+++ /dev/null
@@ -1,18 +0,0 @@
-# Copyright 2017-present Open Networking Foundation
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License
-
-from django.db import models
-from core.models import ServiceInstance
-from django.db.models import *
-from core.models.xosbase import StrippedCharField