fix typo in unused data select

Author: Ilya Ivanov

check-unused-data.sql

@@ -5,4 +5,4 @@ SELECT count(itemid) AS history_text FROM history_text WHERE itemid NOT IN (SELE
 SELECT count(itemid) AS history_log FROM history_log WHERE itemid NOT IN (SELECT itemid FROM items WHERE status='0');
 
 SELECT count(itemid) AS trends FROM trends WHERE itemid NOT IN (SELECT itemid FROM items WHERE status='0');
-SELECT count(itemid) AS trends FROM trends itemid NOT IN (SELECT itemid FROM items WHERE status='0');
+SELECT count(itemid) AS trends_uint FROM trends_uint WHERE itemid NOT IN (SELECT itemid FROM items WHERE status='0');