ref: delete unused MetricsKeyIndexer model pt 2 (#82556)

<!-- Describe your PR here. -->

migrations_lockfile.txt

@@ -15,7 +15,7 @@ remote_subscriptions: 0003_drop_remote_subscription
 
 replays: 0004_index_together
 
-sentry: 0803_delete_unused_metricskeyindexer_pt1
+sentry: 0804_delete_metrics_key_indexer_pt2
 
 social_auth: 0002_default_auto_field
 

src/sentry/migrations/0804_delete_metrics_key_indexer_pt2.py

@@ -0,0 +1,27 @@
+# Generated by Django 5.1.4 on 2024-12-26 14:38
+
+from sentry.new_migrations.migrations import CheckedMigration
+from sentry.new_migrations.monkey.models import SafeDeleteModel
+from sentry.new_migrations.monkey.state import DeletionAction
+
+
+class Migration(CheckedMigration):
+    # This flag is used to mark that a migration shouldn't be automatically run in production.
+    # This should only be used for operations where it's safe to run the migration after your
+    # code has deployed. So this should not be used for most operations that alter the schema
+    # of a table.
+    # Here are some things that make sense to mark as post deployment:
+    # - Large data migrations. Typically we want these to be run manually so that they can be
+    #   monitored and not block the deploy for a long period of time while they run.
+    # - Adding indexes to large tables. Since this can take a long time, we'd generally prefer to
+    #   run this outside deployments so that we don't block them. Note that while adding an index
+    #   is a schema change, it's completely safe to run the operation after the code has deployed.
+    # Once deployed, run these manually via: https://develop.sentry.dev/database-migrations/#migration-deployment
+
+    is_post_deployment = False
+
+    dependencies = [
+        ("sentry", "0803_delete_unused_metricskeyindexer_pt1"),
+    ]
+
+    operations = [SafeDeleteModel(name="MetricsKeyIndexer", deletion_action=DeletionAction.DELETE)]