fix: remove timestamps from flake model

we don't require these fields for the Flake model

shared/django_apps/reports/migrations/0034_remove_flake_created_at_remove_flake_updated_at.py

@@ -0,0 +1,35 @@
+# Generated by Django 4.2.16 on 2024-12-13 15:44
+
+from django.db import migrations
+
+from shared.django_apps.migration_utils import RiskyRemoveField
+
+"""
+BEGIN;
+--
+-- Remove field created_at from flake
+--
+ALTER TABLE "reports_flake" DROP COLUMN "created_at" CASCADE;
+--
+-- Remove field updated_at from flake
+--
+ALTER TABLE "reports_flake" DROP COLUMN "updated_at" CASCADE;
+COMMIT;
+"""
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("reports", "0033_alter_testinstance_duration_seconds"),
+    ]
+
+    operations = [
+        RiskyRemoveField(
+            model_name="flake",
+            name="created_at",
+        ),
+        RiskyRemoveField(
+            model_name="flake",
+            name="updated_at",
+        ),
+    ]

shared/django_apps/reports/models.py

@@ -373,7 +373,8 @@ class Meta:
         ]
 
 
-class Flake(BaseModel):
+class Flake(models.Model):
+    id = models.BigAutoField(primary_key=True)
     repository = models.ForeignKey(
         "core.Repository",
         db_column="repoid",