Remove event hosts relationship

and parent event-event ForeignKey relationship

awx/main/migrations/0105_v370_remove_jobevent_parent_and_hosts.py

@@ -0,0 +1,21 @@
+# Generated by Django 2.2.8 on 2020-01-15 18:01
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('main', '0104_v370_cleanup_old_scan_jts'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='jobevent',
+            name='parent',
+        ),
+        migrations.RemoveField(
+            model_name='jobevent',
+            name='hosts',
+        ),
+    ]