Remove unused algortihm VeloClusterContainerCopy
As part of the cleanup of mutables I realised that the algorithm VeloClusterContainerCopy and the two tools it used VeloSelectChannelIDOnTrack and VeloSelectClustersByChannel were all dependant on mutables and not actually ever used. So I removed them. There will be a related update to LHCb/LHCb to remove the interfaces.