remove big mistake: orders from product

Signed-off-by: Nico Schottelius <nico@nico-notebook.schottelius.org>

uncloud_pay/migrations/0015_auto_20200928_1844.py

@@ -0,0 +1,25 @@
+# Generated by Django 3.1 on 2020-09-28 18:44
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('uncloud_pay', '0014_auto_20200825_1915'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='sampleonetimeproduct',
+            name='orders',
+        ),
+        migrations.RemoveField(
+            model_name='samplerecurringproduct',
+            name='orders',
+        ),
+        migrations.RemoveField(
+            model_name='samplerecurringproductonetimefee',
+            name='orders',
+        ),
+    ]