Cleanse SQL exception on startup

```
14:51:40 [SCHWERWIEGEND] [BBROTHER] Cleanse SQL exception (by #)
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '3000000DELETE FROM bbdata WHERE id NOT IN (SELECT id FROM top_record) LIMIT 2000' at line 1
```
