code: def delete_file(self, sass_filename, sass_fileurl):
          
          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))
docs: Delete a *.css file, but only if it has been generated through a SASS/SCSS file.