I don't have the KDE version at hand at the moment, but I would suggest you to simply search in the KDE Center Configuration, to start with. There is no such action as adding or removing a menu entry for this type of function, you can find configuration in KDE control center.
You can also look in Synaptic, to remove packages such as "xlockmore" or such. You ought to do a search there anyhow, with just the word "lock", and only "Name" instead of "Name and Description" - I am talking about the "Search" button in Synaptic, the one that stands just below the menus.
I also think your post should have ended in Software section, and not "Advanced section". This is a simple configuration problem...
Hello, Melodie. Yes, I know how to search in Synaptic, but I don't see how it applies - I need to remove two entries from the KMenu menu, not remove apps. However; as I said, KMenuEdit does not allow anyone to edit any listings in the 'Actions' section of the menu - only 'Applications' listings are shown in the editor, and the 'Actions' listings are not listed there at all, and there is no (obvious) kmenu.cfg file in /home/me/.kde or anywhere else, so how then is anyone supposed to fully edit any/all KMenu listings? I've searched through the forums repeatedly, I've looked at the wiki, I've done similar at kde.org and other places, and nothing is turning up at all - the 'Actions' section of the KMenu listing remains utterly inaccessible. Why? Clearly, if there's no straightforward way of editing that portion of KMenu and there's also no config file to twiddle with, then it must somehow be a more 'advanced' issue - so that's why I posted this question here. I never use those KMenu options, but I keep kitting them accidentally and locking myself out anyways, which for me is rather painful as I use very long passwords that are not trivial to type. Furthermore, in my searches through the forum regarding this, I see I'm not the only one - others have suffered the same also, so that's why I'm seeking a solution.