CID-1192805: Remove dead local store from OvsNetworkTopologyGuruImpl

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
CID-1192811: Remove dead local store from VolumeJoinDaoImpl

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
CID-1192812: Remove dead code from DataCenterJoinDaoImpl

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
CID-1199715: Remove dead code from LibvirtStorageAdaptor

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>