Remove a user from the group.

    CLI Example:

    .. code-block:: bash

         salt '*' group.deluser foo bar

    Removes a member user 'bar' from a group 'foo'. If group is not present
    then returns True.

def deluser(name, username, root=None):
    '''
    Remove a user from the group.

    CLI Example:

    .. code-block:: bash

         salt '*' group.deluser foo bar

    Removes a member user 'bar' from a group 'foo'. If group is not present
    then returns True.
    '''
    grp_info = __salt__['group.info'](name)
    try:
        if username in grp_info['members']:
            cmd = 'chgrpmem -m - {0} {1}'.format(username, name)
            ret = __salt__['cmd.run'](cmd, python_shell=False)
            return not ret['retcode']
        else:
            return True
    except Exception:
        return True