def delete_file(self, sass_filename, sass_fileurl):
        """
        Delete a *.css file, but only if it has been generated through a SASS/SCSS file.
        """
        if self.use_static_root:
            destpath = os.path.join(self.static_root, os.path.splitext(sass_fileurl)[0] + '.css')
        else:
            destpath = os.path.splitext(sass_filename)[0] + '.css'
        if os.path.isfile(destpath):
            os.remove(destpath)
            self.processed_files.append(sass_filename)
            if self.verbosity > 1:
                self.stdout.write("Deleted '{0}'\n".format(destpath))
Delete a *.css file, but only if it has been generated through a SASS/SCSS file.