Remove django-simple-history and all HistoricalRecords.

common/djangoapps/microsite_configuration/models.py

@@ -14,7 +14,6 @@ from django.db.models.signals import pre_delete, pre_save
 from django.dispatch import receiver
 from jsonfield.fields import JSONField
 from model_utils.models import TimeStampedModel
-from simple_history.models import HistoricalRecords
 
 
 class Microsite(models.Model):
@@ -115,9 +114,6 @@ class MicrositeOrganizationMapping(models.Model):
     organization = models.CharField(max_length=63, db_index=True, unique=True)
     microsite = models.ForeignKey(Microsite, db_index=True)
 
-    # for archiving
-    history = HistoricalRecords()
-
     def __unicode__(self):
         """String conversion"""
         return u'{microsite_key}: {organization}'.format(
@@ -155,9 +151,6 @@ class MicrositeTemplate(models.Model):
     template_uri = models.CharField(max_length=255, db_index=True)
     template = models.TextField()
 
-    # for archiving
-    history = HistoricalRecords()
-
     def __unicode__(self):
         """String conversion"""
         return u'{microsite_key}: {template_uri}'.format(

common/djangoapps/student/models.py

@@ -42,7 +42,6 @@ from eventtracking import tracker
 from model_utils.models import TimeStampedModel
 from opaque_keys.edx.keys import CourseKey
 from pytz import UTC
-from simple_history.models import HistoricalRecords
 from slumber.exceptions import HttpClientError, HttpServerError
 
 import dogstats_wrapper as dog_stats_api
@@ -1027,9 +1026,6 @@ class CourseEnrollment(models.Model):
 
     objects = CourseEnrollmentManager()
 
-    # Maintain a history of requirement status updates for auditing purposes
-    history = HistoricalRecords()
-
     # cache key format e.g enrollment.<username>.<course_key>.mode = 'honor'
     COURSE_ENROLLMENT_CACHE_KEY = u"enrollment.{}.{}.mode"  # TODO Can this be removed?  It doesn't seem to be used.