I have searched through the entire menu editor, deleting everything I do not want. However if I use the search feature in whisker the entries remain as dead links.
I found it by removing the links from
cd ~/.local/share/applications rm gog_com-Dragonsphere_1.desktop rm unity-editor*
For some reason, I was given a prompt to remove these, but for some reason they persisted under multiple deletes. They were removed simply with sudo privileges.