def remove(self, counter):
if not counter.leave:<EOL><INDENT>try:<EOL><INDENT>del self.counters[counter]<EOL><DEDENT>except KeyError:<EOL><INDENT>pass<EOL><DEDENT><DEDENT>
Args:
    counter(:py:class:`Counter`): Progress bar instance

Remove progress bar instance from manager

Does not error if instance is not managed by this manager

Generally this method should not be called directly,
instead used :py:meth:`remove`.