lxc-destroy: avoid double print
lxc-destroy: avoid double print

Signed-off-by: Christian Brauner <48455ab3070520a2d174545c7239d6d0fabd9a83@mailbox.org>

QingweiPeterLan/cs188-lxc,QingweiPeterLan/cs188-lxc,QingweiPeterLan/cs188-lxc