Is your feature request related to a problem? Please describe.

Sometimes there is a bunch of links in something that are kind of pointless to keep.
<a href="javascript:…"> or <a href="#"> are such examples. Especially clickable headlines with a #id can be annoying in markdown results. It should be possible to remove them keeping their content.

<div><a href="#"><h3>Something</h3></a></div> should become <div><h3>Something</h3></div>.

Describe the solution you'd like

For the editor I think something like this might work well: html_unlink: regex.
The regex would match with the href content and replace it.

Describe alternatives you've considered

Something like html_flatten: a[href^='#'] might also be neat replacing matching elements with their content.