Merge pull request #8531 from edx/awais786/ECOM-1494-del-migrations

ECOM-1494 deleting models from database through new migrations.

common/djangoapps/reverification/migrations/0002_auto__del_midcoursereverificationwindow.py

@@ -0,0 +1,31 @@
+# -*- coding: utf-8 -*-
+from south.utils import datetime_utils as datetime
+from south.db import db
+from south.v2 import SchemaMigration
+from django.db import models
+
+
+class Migration(SchemaMigration):
+
+
+    def forwards(self, orm):
+        # Deleting model 'MidcourseReverificationWindow'
+        db.delete_table('reverification_midcoursereverificationwindow')
+
+
+    def backwards(self, orm):
+        # Adding model 'MidcourseReverificationWindow'
+        db.create_table('reverification_midcoursereverificationwindow', (
+            ('course_id', self.gf('django.db.models.fields.CharField')(max_length=255, db_index=True)),
+            ('id', self.gf('django.db.models.fields.AutoField')(primary_key=True)),
+            ('end_date', self.gf('django.db.models.fields.DateTimeField')(default=None, null=True, blank=True)),
+            ('start_date', self.gf('django.db.models.fields.DateTimeField')(default=None, null=True, blank=True)),
+        ))
+        db.send_create_signal('reverification', ['MidcourseReverificationWindow'])
+
+
+    models = {
+        
+    }
+
+    complete_apps = ['reverification']