Don't store default edition in the dataase

bookwyrm/migrations/0072_remove_work_default_edition.py

@@ -0,0 +1,17 @@
+# Generated by Django 3.2 on 2021-04-28 22:16
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("bookwyrm", "0071_merge_0063_auto_20210407_0045_0070_auto_20210423_0121"),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name="work",
+            name="default_edition",
+        ),
+    ]