Can't delete poster that violates copyright

A temp poster I made for my own film was uploaded to the film's photos section, however I recently found out that one of the fonts used in the poster is copyrighted and we do not have permission to use it/post it anywhere. How do I get this poster removed? I tried to report it as inappropriate and explained in the report comments that it violated copyright, however my contribution was declined (the reference number was 260410-173333-048902). Does anyone know how I can get it removed? It's not currently set as the primary image for the film.