[MIG] base_global_discount: Migration to 13.0

base_global_discount/migrations/13.0.1.0.0/pre-migration.py

@@ -0,0 +1,13 @@
+# Copyright 2020 Tecnativa - Ernesto Tejeda
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+
+def migrate(cr, version):
+    if not version:
+        return
+    cr.execute(
+        """
+        DELETE FROM ir_model_relation
+        WHERE name = 'global_discount_res_partner_rel';
+        """
+    )