Removing unused code in docker_client
Removing unused code in docker_client

Change-Id: If820cd0314aad1df69713df747c9f88fd5be4fa8

jay-lau/magnum,Tennyson53/magnum,Tennyson53/SUR,ffantast/magnum,mjbrewer/testindex,eshijia/magnum,paulczar/magnum,LaynePeng/magnum,sajuptpm/magnum,Tennyson53/magnum,eshijia/SUR,eshijia/SUR,ramielrowe/magnum,hongbin/magnum,openstack/magnum,Alzon/SUR,ChengTiesheng/magnum,dimtruck/magnum,mjbrewer/testindex,sajuptpm/magnum,ffantast/magnum,ddepaoli3/magnum,Alzon/SUR,paulczar/magnum,annegentle/magnum,openstack/magnum,LaynePeng/magnum,ddepaoli3/magnum,dimtruck/magnum,eshijia/magnum,ArchiFleKs/magnum,mjbrewer/testindex,hongbin/magnum,annegentle/magnum,Tennyson53/SUR,ramielrowe/magnum,ArchiFleKs/magnum,ChengTiesheng/magnum