Remove some references to shim layer

- Legacy-Id: 6822

ietf/secr/proceedings/views.py

@@ -24,7 +24,6 @@ from ietf.secr.utils.meeting import get_upload_root, get_proceedings_path, get_m
 
 from ietf.doc.models import Document, DocAlias, DocEvent, State, NewRevisionDocEvent, RelatedDocument
 from ietf.group.models import Group
-from ietf.group.proxy import IETFWG
 from ietf.group.utils import get_charter_text
 from ietf.ietfauth.utils import has_role
 from ietf.meeting.models import Meeting, Session, TimeSlot, ScheduledSession

ietf/secr/utils/document.py

@@ -24,6 +24,6 @@ def get_start_date(doc):
     This function takes a document object and returns the date of the first
     new revision doc event
     '''
-    # based on ietf.doc.proxy
+    # originally based on doc shim layer
     event = doc.docevent_set.filter(type='new_revision').order_by('time')
-    return event[0].time.date() if event else None
+    return event[0].time.date() if event else None