Hi Gorkan,
The problem is that I gave you the procedure for an Oracle database, has I saw in you screenshot you have a MaxDB database... You need to run the query that I gave you above but first you need to connect to your MaxDB database... please try using SQLCLI:
sqlcli -d NSP -u USER,PASSWORD -S INTERNAL
DELETE FROM <DBSCHEMA>.usr02 WHERE bname='sap*' AND mandt='XXX'; (schema is usually SAPSR3 and mandt 000)
Good luck!