This migration shouldn't be in Ficus at all

common/djangoapps/student/migrations/0010_auto_20170207_0458.py

-# -*- coding: utf-8 -*-
-from __future__ import unicode_literals
-
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('student', '0009_auto_20170111_0422'),
-    ]
-
-    # This migration was to add a constraint that we lost in the Django
-    # 1.4->1.8 upgrade. But since the constraint used to be created, production
-    # would already have the constraint even before running the migration, and
-    # running the migration would fail. We needed to make the migration
-    # idempotent.  Instead of reverting this migration while we did that, we
-    # edited it to be a SQL no-op, so that people who had already applied it
-    # wouldn't end up with a ghost migration.
-
-    # It had been:
-    #
-    # migrations.RunSQL(
-    #   "create unique index email on auth_user (email);",
-    #   "drop index email on auth_user;"
-    # )
-
-    operations = [
-        # Nothing to do.
-    ]