chore: remove unused import, add some comments

openedx_learning/core/contents/models.py

@@ -7,7 +7,6 @@
 
 from functools import cached_property
 
-from django.conf import settings
 from django.core.exceptions import ValidationError
 from django.core.files.base import File
 from django.core.files.storage import default_storage, Storage

openedx_learning/core/publishing/models.py

@@ -39,6 +39,11 @@ class LearningPackage(models.Model):  # type: ignore[django-manager-missing]
     uuid = immutable_uuid_field()
     key = key_field()
     title = case_insensitive_char_field(max_length=500, blank=False)
+
+    # TODO: We should probably defer this field, since many things pull back
+    # LearningPackage as select_related. Usually those relations only care about
+    # the UUID and key, so maybe it makes sense to separate the model at some
+    # point.
     description = MultiCollationTextField(
         blank=True,
         null=False,