diff --git a/account_move_line_purchase_info/migrations/14.0.1.0.0/pre-migration.py b/account_move_line_purchase_info/migrations/14.0.1.0.0/pre-migration.py
deleted file mode 100644
index 798b7ac8..00000000
--- a/account_move_line_purchase_info/migrations/14.0.1.0.0/pre-migration.py
+++ /dev/null
@@ -1,26 +0,0 @@
-# Copyright 2021 Ecosoft Co., Ltd. (http://ecosoft.co.th)
-# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
-from openupgradelib import openupgrade
-
-
-@openupgrade.migrate()
-def migrate(env, version):
-    """
-    Column `purchase_id` of table `account_move_line` has been renamed to `purchase_order_id`
-    because `purchase_order_id` is now in the core.
-    """
-    old_purchase_column = "purchase_id"
-    new_purchase_column = "purchase_order_id"
-
-    if not openupgrade.column_exists(env.cr, "account_move_line", new_purchase_column):
-        openupgrade.rename_fields(
-            env,
-            [
-                (
-                    "account.move.line",
-                    "account_move_line",
-                    old_purchase_column,
-                    new_purchase_column,
-                ),
-            ],
-        )