remove v from query

src/database/postgres/sorted.js

@@ -697,7 +697,7 @@ DELETE FROM "legacy_zset" z
 
 			var batchSize = (options || {}).batch || 100;
 			var query = client.query(new Cursor(`
-SELECT z."value", z."score" v
+SELECT z."value", z."score"
   FROM "legacy_object_live" o
  INNER JOIN "legacy_zset" z
          ON o."_key" = z."_key"