diff --git a/attachment_s3/migrations/10.0.1.1.0/post-migration.py b/attachment_s3/migrations/10.0.1.1.0/post-migration.py
deleted file mode 100644
index a8ffd31..0000000
--- a/attachment_s3/migrations/10.0.1.1.0/post-migration.py
+++ /dev/null
@@ -1,61 +0,0 @@
-# Copyright 2016-2018 Camptocamp SA
-# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html)
-
-import logging
-import os
-
-from contextlib import closing
-
-import odoo
-
-_logger = logging.getLogger(__name__)
-
-
-def migrate(cr, version):
-    if not version:
-        return
-    cr.execute("""
-        SELECT value FROM ir_config_parameter
-        WHERE key = 'ir_attachment.location'
-    """)
-    row = cr.fetchone()
-    bucket = os.environ.get('AWS_BUCKETNAME')
-
-    if row[0] == 's3' and bucket:
-        uid = odoo.SUPERUSER_ID
-        registry = odoo.modules.registry.RegistryManager.get(cr.dbname)
-        new_cr = registry.cursor()
-        with closing(new_cr):
-            with odoo.api.Environment.manage():
-                env = odoo.api.Environment(new_cr, uid, {})
-                store_local = env['ir.attachment'].search(
-                    [('store_fname', '=like', 's3://%'),
-                     '|', ('res_model', '=', 'ir.ui.view'),
-                          ('res_field', 'in', ['image_small',
-                                               'image_medium',
-                                               'web_icon_data'])
-                     ],
-                )
-
-                _logger.info(
-                    'Moving %d attachments from S3 to DB for fast access',
-                    len(store_local)
-                )
-                for attachment_id in store_local.ids:
-                    # force re-storing the document, will move
-                    # it from the object storage to the database
-
-                    # This is a trick to avoid having the 'datas' function
-                    # fields computed for every attachment on each
-                    # iteration of the loop.  The former issue being that
-                    # it reads the content of the file of ALL the
-                    # attachments on each loop.
-                    try:
-                        env.clear()
-                        attachment = env['ir.attachment'].browse(attachment_id)
-                        _logger.info('Moving attachment %s (id: %s)',
-                                     attachment.name, attachment.id)
-                        attachment.write({'datas': attachment.datas})
-                        new_cr.commit()
-                    except:
-                        new_cr.rollback()