feat(eventuser): Migration to drop EventUser table (2/2) (#61234)

## Objective:

Part 2 Migration to drop the sentry_eventuser table.

migrations_lockfile.txt

@@ -9,5 +9,5 @@ feedback: 0003_feedback_add_env
 hybridcloud: 0009_make_user_id_optional_for_slug_reservation_replica
 nodestore: 0002_nodestore_no_dictfield
 replays: 0003_add_size_to_recording_segment
-sentry: 0613_drop_eventuser_table_part_1
+sentry: 0614_drop_eventuser_table_part_2
 social_auth: 0002_default_auto_field

src/sentry/migrations/0614_drop_eventuser_table_part_2.py

@@ -0,0 +1,33 @@
+# Generated by Django 3.2.23 on 2023-12-06 05:33
+
+from django.db import migrations
+
+from sentry.new_migrations.migrations import CheckedMigration
+
+
+class Migration(CheckedMigration):
+    # This flag is used to mark that a migration shouldn't be automatically run in production. For
+    # the most part, 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 dangerous:
+    # - Large data migrations. Typically we want these to be run manually by ops 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
+    #   have ops run this and not block the deploy. Note that while adding an index is a schema
+    #   change, it's completely safe to run the operation after the code has deployed.
+    is_dangerous = True
+
+    dependencies = [
+        ("sentry", "0613_drop_eventuser_table_part_1"),
+    ]
+
+    operations = [
+        migrations.RunSQL(
+            """
+            DROP TABLE "sentry_eventuser";
+            """,
+            reverse_sql="CREATE TABLE sentry_eventuser (fake_col int)",  # We just create a fake table here so that the DROP will work if we roll back the migration.
+            hints={"tables": ["sentry_eventuser"]},
+        )
+    ]