Drop notes tables.

common/djangoapps/util/tests/test_db.py

@@ -223,7 +223,6 @@ class MigrationTests(TestCase):
     Tests for migrations.
     """
 
-    @unittest.skip("Migration will delete the Note model. Need to ship not referencing it first. DEPR-18.")
     @override_settings(MIGRATION_MODULES={})
     def test_migrations_are_in_sync(self):
         """

lms/djangoapps/notes/migrations/0002_remove_tables.py

+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.25 on 2019-10-01 18:23
+from __future__ import unicode_literals
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('notes', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='note',
+            name='user',
+        ),
+        migrations.DeleteModel(
+            name='Note',
+        ),
+    ]