Per this vote in 2009 http://es.wikibooks.org/wiki/Wikilibros:Votaciones/2009/Pol%C3%ADtica_de_im%C3%A1genes we decided to disalow local uploads on eswikibooks and to start the cleanup process of those locally-hosted images. Most of them w/o any kind of source, licence and/or permission; putting the project under legal risk. See local policy http://es.wikibooks.org/wiki/Wikilibros:Propuesta_de_pol%C3%ADtica_de_im%C3%A1genes. The disalow was requested in bug 18865.
Since 2009 I've been reviewing and deleting hundreds of images, but I am the only one administrator doing so. After two years more than 1,200 images still needs deletion and I'm unable to afford this massive deletion w/o any kind of help. I've been using my sysop-flagged bot http://es.wikibooks.org/w/index.php?title=Especial:Registro&user=Dfergbot to help me on the deletion process however I need to tag the images first and then using the delete.py script which is a complete waste of time.
I'm asking here if you could run for us a maintenance script or something to delete absolutelly all local images (bot-flagged if possible). I'm the only one currently doing this task and I never finish. Most of those files, as I've said above, are or copyright violations or unsourced/unlicensed files. Neither one or another are allowed on Wikimedia-Commons.
If you have any question or request, feel free to ask.