Fix migration order

Signed-off-by: Tushar Goel <tushar.goel.dav@gmail.com>

Author: TG1999

vulnerabilities/migrations/0135_advisoryv2__all_impacts_unfurled_successfully_and_more.py

@@ -18,10 +18,4 @@ class Migration(migrations.Migration):
                 help_text="Indicates whether all impacts for this advisory have been unfurled successfully.",
             ),
         ),
-        migrations.AddIndex(
-            model_name="advisoryv2",
-            index=models.Index(
-                fields=["_all_impacts_unfurled", "id"], name="advisory_unfurled_idx"
-            ),
-        ),
     ]