BOM-2375

Run Pyupgrade on static replace folder.

common/djangoapps/static_replace/migrations/0001_initial.py

@@ -1,6 +1,3 @@
-# -*- coding: utf-8 -*-
-
-
 import django.db.models.deletion
 from django.conf import settings
 from django.db import migrations, models
@@ -19,7 +16,7 @@ class Migration(migrations.Migration):
                 ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
                 ('change_date', models.DateTimeField(auto_now_add=True, verbose_name='Change date')),
                 ('enabled', models.BooleanField(default=False, verbose_name='Enabled')),
-                ('base_url', models.TextField(help_text=u'The alternative hostname to serve static assets from.  Should be in the form of hostname[:port].', blank=True)),
+                ('base_url', models.TextField(help_text='The alternative hostname to serve static assets from.  Should be in the form of hostname[:port].', blank=True)),
                 ('changed_by', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, editable=False, to=settings.AUTH_USER_MODEL, null=True, verbose_name='Changed by')),
             ],
         ),