Don't store default edition in the dataase

bookwyrm/tests/connectors/test_connector_manager.py

@@ -17,8 +17,6 @@ class ConnectorManager(TestCase):
         self.edition = models.Edition.objects.create(
             title="Example Edition", parent_work=self.work, isbn_10="0000000000"
         )
-        self.work.default_edition = self.edition
-        self.work.save()
 
         self.connector = models.Connector.objects.create(
             identifier="test_connector",

bookwyrm/tests/connectors/test_self_connector.py

@@ -84,11 +84,11 @@ class SelfConnector(TestCase):
             title="Edition 1 Title", parent_work=work
         )
         edition_2 = models.Edition.objects.create(
-            title="Edition 2 Title", parent_work=work
+            title="Edition 2 Title",
+            parent_work=work,
+            edition_rank=20,  # that's default babey
         )
         edition_3 = models.Edition.objects.create(title="Fish", parent_work=work)
-        work.default_edition = edition_2
-        work.save()
 
         # pick the best edition
         results = self.connector.search("Edition 1 Title")

bookwyrm/tests/models/test_book_model.py

@@ -84,9 +84,3 @@ class Book(TestCase):
         self.first_edition.description = "hi"
         self.first_edition.save()
         self.assertEqual(self.first_edition.edition_rank, 1)
-
-        # default edition
-        self.work.default_edition = self.first_edition
-        self.work.save()
-        self.first_edition.refresh_from_db()
-        self.assertEqual(self.first_edition.edition_rank, 20)

bookwyrm/tests/models/test_readthrough_model.py

@@ -2,7 +2,7 @@
 from django.test import TestCase
 from django.core.exceptions import ValidationError
 
-from bookwyrm import models, settings
+from bookwyrm import models
 
 
 class ReadThrough(TestCase):
@@ -19,8 +19,6 @@ class ReadThrough(TestCase):
         self.edition = models.Edition.objects.create(
             title="Example Edition", parent_work=self.work
         )
-        self.work.default_edition = self.edition
-        self.work.save()
 
         self.readthrough = models.ReadThrough.objects.create(
             user=self.user, book=self.edition

bookwyrm/tests/views/test_readthrough.py

@@ -20,8 +20,6 @@ class ReadThrough(TestCase):
         self.edition = models.Edition.objects.create(
             title="Example Edition", parent_work=self.work
         )
-        self.work.default_edition = self.edition
-        self.work.save()
 
         self.user = models.User.objects.create_user(
             "cinco", "cinco@example.com", "seissiete", local=True, localname="cinco"