Remove limit/marker from object_store proxy
Remove limit/marker from object_store proxy

After the recent changes, object_store was still sending limit and
marker but in the wrong way. Removing them for right now.

Change-Id: Ic1a0a0d8e84aa22eca5d4d18794462ad30d33619

briancurtin/python-openstacksdk,dudymas/python-openstacksdk,openstack/python-openstacksdk,openstack/python-openstacksdk,dtroyer/python-openstacksdk,mtougeron/python-openstacksdk,dudymas/python-openstacksdk,briancurtin/python-openstacksdk,dtroyer/python-openstacksdk,stackforge/python-openstacksdk,mtougeron/python-openstacksdk,stackforge/python-openstacksdk