remove priority = NULL from unapprove statement

Author: Sakib25800

.sqlx/query-32c1cd799f8a1e8c451493959419570892d76e7adbc3e5c7b50e97e1bfee27bd.json

@@ -93,7 +93,7 @@ pub(crate) async fn unapprove_pull_request(
     pr_id: i32,
 ) -> anyhow::Result<()> {
     sqlx::query!(
-        "UPDATE pull_request SET approved_by = NULL, priority = NULL WHERE id = $1",
+        "UPDATE pull_request SET approved_by = NULL WHERE id = $1",
         pr_id
     )
     .execute(executor)