fix for drop hive_post_tags without assign tags to post during upgrades

hive/db/sql_scripts/upgrade/upgrade_table_schema.sql

@@ -422,4 +422,4 @@ CREATE INDEX IF NOT EXISTS hive_posts_promoted_id_idx ON hive_posts (promoted, i
 
  CREATE INDEX IF NOT EXISTS hive_posts_tags_ids_idx ON hive_posts USING gin(tags_ids gin__int_ops);
 
- DROP TABLE IF EXISTS hive_post_tags;
+ --DROP TABLE IF EXISTS hive_post_tags;