fix(ipns): remove unused query on "Article.slug"

lib/db.ts

@@ -290,10 +290,9 @@ LIMIT ${take} OFFSET ${skip};`
     return sqlRO`-- check latest articles' author ipns_key
 SELECT u2.user_name, u2.display_name, GREATEST(ul.last_at ::date, u2.last_seen ::date) AS last_seen,
   count_articles, ipns_key, last_data_hash AS top_dir_data_hash, last_published, a.*, avn.title,
-  concat('https://matters.town/@', u2.user_name, '/', a.id, '-', a.slug) AS last_article_url,
   priv_key_pem, priv_key_name
 FROM (
-  SELECT DISTINCT ON (author_id) author_id, id, slug, summary, data_hash AS last_article_data_hash, media_hash, created_at AS last_article_published
+  SELECT DISTINCT ON (author_id) author_id, id, summary, data_hash AS last_article_data_hash, media_hash, created_at AS last_article_published
   FROM article
   WHERE state IN ('active')
     AND author_id NOT IN (SELECT user_id FROM user_restriction) -- skip restricted authors
@@ -516,7 +515,7 @@ RETURNING * ;`
 
   queryArticlesByUuid(uuids: string[]) {
     return sqlRO` 
-      SELECT a.id, avn.title, a.slug, avn.data_hash, avn.media_hash, a.created_at 
+      SELECT a.id, avn.title, avn.data_hash, avn.media_hash, a.created_at 
       FROM article a
       LEFT JOIN article_version_newest avn ON a.id = avn.article_id 
       WHERE a.uuid =ANY(${uuids})