How remove an application link from the application bar LXDE

Hi,
i’m new member of this community.
My configuration is OS Open Suse 12, and LXDE desktop.

After i’ve installed dbms PostgreSQL from Yast i had problems with grents of the database (and with other infinity problems). All i want is remove PostgreSQL menu and the other submenu like, for example PGAdminIII and all other files related.
Can help me.

thanks to everyone