pub fn remove_image(&mut self, image: &Handle<Image>) -> Option<egui::TextureId> {
        let id = self.textures.remove(image);
        log::debug!("Remove image (id: {:?}, handle: {:?})", id, image);
        if let Some(id) = id {
            self.free_list.push(id);
        }
        id.map(egui::TextureId::User)
    }
Removes the image handle and an Egui texture id associated with it.
src/lib.rs