someone else posted this steps which i have tried and it worked for me

in order to uninstall a game, delete the folder

Code:
$ sudo gainroot
$ rm -r game-folder
further to remove the icon, you need to delete three files

Code:
$ cd /usr/share/applications/hildon
$ rm filename.desktop
$ cd /usr/share/dbus-1/services
$ rm filename.service
$ cd /usr/share/icons/hicolor/scalable/hildon
$ rm filename.png
towards the end, refresh your menu

Code:
$ killall hildon-desktop
that should do it

like i said its not my work so credit goes to him