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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def unpair(address):
    '''
    Unpair the bluetooth adapter from a device

    CLI Example:

    .. code-block:: bash

        salt '*' bluetooth.unpair DE:AD:BE:EF:CA:FE

    Where DE:AD:BE:EF:CA:FE is the address of the device to unpair.

    TODO: This function is currently broken, as the bluez-simple-agent program
    no longer ships with BlueZ >= 5.0. It needs to be refactored.
    '''
    if not salt.utils.validate.net.mac(address):
        raise CommandExecutionError(
            'Invalid BD address passed to bluetooth.unpair'
        )

    cmd = 'bluez-test-device remove {0}'.format(address)
    out = __salt__['cmd.run'](cmd).splitlines()
    return out