'Remove one or more lines from the VCard.
>>> vc = SimpleVCard(VCardLine(name=\'fn\', value=\'Houdini\'))
>>> vc.remove(vc.get(\'fn\').line_id)
1
>>> vc.get(\'fn\')
Traceback (most recent call last):
IndexError: ...'

def remove(self, *line_ids):

    removed = 0
    with self._lock:
        for index in range(0, len(self._lines)):
            vcl = self._lines[index]
            if (vcl and (vcl.line_id in line_ids)):
                if (self._lines[index].name in self.UNREMOVABLE):
                    raise ValueError(('Cannot    remove    %s    from    VCard' % self._lines[index].name))
                self._lines[index] = None
                removed += 1
    return removed
