Unpublish this extension from Flathub

This plug-in is appearing as a GIMP extension on Flathub:


So, users will install this extension expecting it to work but it will never work because it is abandoned since 6 years and never ported to GIMP 3. Last commit is from 2019: https://github.com/seebk/GIMP-Lensfun/commit/c5eaf978715b5314d5796afc7ba8f9e8ddc2f625

Review the Flathub listing and the linked GIMP-Lensfun commit from 2019, then confirm that the extension remains unported to GIMP 3 and is still presented to users. Check the project’s Flathub removal process; done means the misleading extension listing is unpublished or otherwise no longer offered as a working GIMP 3 extension.

Written by the indexing model from the issue text.