Pyflakes fixes.

- Legacy-Id: 14989

ietf/meeting/utils.py

@@ -10,6 +10,7 @@ import debug                            # pyflakes:ignore
 from ietf.dbtemplate.models import DBTemplate
 from ietf.meeting.models import Session, Meeting
 from ietf.group.utils import can_manage_materials
+from ietf.person.models import Email
 from ietf.secr.proceedings.proc_utils import import_audio_files
 
 def group_sessions(sessions):

ietf/person/utils.py

@@ -7,11 +7,12 @@ import syslog
 
 from django.contrib import admin
 from django.contrib.auth.models import User
+from django.core.cache import cache
 from django.core.exceptions import ObjectDoesNotExist
 
 import debug                            # pyflakes:ignore
 
-from ietf.person.models import Person, Email
+from ietf.person.models import Person
 from ietf.utils.mail import send_mail
 
 def merge_persons(source, target, file=sys.stdout, verbose=False):