delete oauth2.enforce_jwt_scopes waffle switch

The code for this switch was removed in:
https://github.com/edx/edx-platform/pull/23188

BOM-1324

openedx/core/djangoapps/oauth_dispatch/migrations/0009_delete_enable_scopes_waffle_switch.py

@@ -0,0 +1,38 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.28 on 2020-03-04 15:19
+from __future__ import unicode_literals
+"""
+Deletes the ENFORCE_JWT_SCOPES waffle switch that has already been deprecated and removed.
+
+See https://github.com/edx/edx-platform/pull/23188 for the removal
+"""
+
+from django.db import migrations
+
+ENFORCE_JWT_SCOPES = 'oauth2.enforce_jwt_scopes'
+
+
+def delete_switch(apps, schema_editor):
+    """ Delete the switch. """
+    Switch = apps.get_model('waffle', 'Switch')
+    try:
+        Switch.objects.filter(name=ENFORCE_JWT_SCOPES).delete()
+    except Switch.DoesNotExist:
+        pass
+
+
+def create_switch(apps, schema_editor):
+    """ Create the switch if it does not already exist. """
+    Switch = apps.get_model('waffle', 'Switch')
+    Switch.objects.update_or_create(name=ENFORCE_JWT_SCOPES, defaults={'active': True})
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('oauth_dispatch', '0008_applicationaccess_filters'),
+    ]
+
+    operations = [
+        migrations.RunPython(delete_switch, reverse_code=create_switch),
+    ]