Remove "send link to mobile" from right-click menu

Suddenly with the latest update, I'm seeing "send link to mobile" when I right-click on a link. I understand this is useful for many people but I will never use it and would like to remove it from the already-cluttered context menu. I don't see any instructions for doing that, and couldn't find it in about:config. It's frustrating to have something suddenly added without my consent and with no information on how to remove it.