[OU-ADD] account_statement_import_online: Migration script

To have a smooth transition from older versions.

account_statement_import_online/migrations/14.0.1.0.0/pre-migration.py

@@ -0,0 +1,12 @@
+# Copyright 2023 Tecnativa - Pedro M. Baeza
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from openupgradelib import openupgrade
+
+
+@openupgrade.migrate()
+def migrate(env, version):
+    # Remove record that has changed its based model
+    env.ref(
+        "account_statement_import_online.action_online_bank_statements_pull_wizard"
+    ).unlink()