Hi,
Thanks for reply, but you are taking it wrong.

I am asking you to provide an option of completely remove 'Simple Form Fill' from the context menu (not a single item):
https://addons.cdn.mozilla.net/user-media/previews/full/184/184694.png

Currently this is visible even if you right-click on empty element of any website.

Nothing fancy like the form fill feature of LastPass but it does it's job albeit not as quickly.