I just received yet another comment from a bug reported at 2001 asking for `support deletion of attachments‘ in evolution. It’s kind of interesting to see the demand to be fulfilled for all most one decade.
Good news is you no longer need to ask for the feature. Thanks for Milan Crha, developer of RedHat, who help to get the my small plugin into Evolution code base.
So you don’t need to build the plugin by yourself or looking for a package. The feature should be available at Evolution 2.91.2+. 🙂