Remove unused parameter
Remove unused parameter

Right now, the container api controller has parameter not
used anywhere. so we remove those.

Change-Id: I332e8c810f84bc31cb3de68cb7ea40bfaea5cbc3

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