Serialize links for books

bookwyrm/models/user.py

@@ -344,6 +344,7 @@ class User(OrderedCollectionPageMixin, AbstractUser):
 
     def delete(self, *args, **kwargs):
         """deactivate rather than delete a user"""
+        # pylint: disable=attribute-defined-outside-init
         self.is_active = False
         # skip the logic in this class's save()
         super().save(*args, **kwargs)
@@ -404,14 +405,6 @@ class KeyPair(ActivitypubMixin, BookWyrmModel):
             self.private_key, self.public_key = create_key_pair()
         return super().save(*args, **kwargs)
 
-    def to_activity(self, **kwargs):
-        """override default AP serializer to add context object
-        idk if this is the best way to go about this"""
-        activity_object = super().to_activity(**kwargs)
-        del activity_object["@context"]
-        del activity_object["type"]
-        return activity_object
-
 
 class AnnualGoal(BookWyrmModel):
     """set a goal for how many books you read in a year"""