Add migration to remove the mailchimp table if it exist (HyphaApp#3772)

Fixes HyphaApp#3770

hypha/core/migrations/0002_auto_20240215_remove_mailhimp.py

@@ -0,0 +1,14 @@
+# Generated by Django 4.2.9 on 2024-02-15 08:49
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("core", "0001_wagtail_4_reference_index_dependency"),
+    ]
+
+    # Remove the mailchimp settings table, and add a reverse migration to do nothing
+    operations = [
+        migrations.RunSQL("DROP TABLE IF EXISTS mailchimp_newslettersettings;"),
+    ]