docs: def remove(self, uid, filename=None):
          """Removes an address to the Abook addressbook
          uid -- UID of the entry to remove
          """
          book = ConfigParser(default_section='format')
          with self._lock:
              book.read(self._filename)
              del book[uid.split('@')[0]]
              with open(self._filename, 'w') as fp:
                  book.write(fp, False)