When you edit a link to remove it, visualeditor-clearbutton-tooltip ("clear styling") is used as a label on the button that removes links:
This has confused a user feeling uncomfortable with the visual editing interface during a workshop I was leading.
A more clear label should be used, like "removing link".
Side note, if a user wants to clear styling on a bolded link, using that "clear styling" button will not do the expected: the link will be removed, not the bold.