to deprecate qSNP related QSnpGATKRecord and QSnpRecord

[ChristinaXu2017]

Is your feature request related to a problem? Please describe.
QSnpGATKRecord and QSnpRecord are marked as deprecated for a long time, however, we can't really remove them since they are used by other projects unless we remove the below classes:

1. QSnpRecord is required by qsnp::PileupPipeline and qsnp::MuTectPipeline requires. This two pipeline seems old and no longer used by recent SNP calls.
2. QSnpGATKRecord is required by qsnp::util::QJumperWorker, which is also only required by qsnp::PileupPipeline.
3. qsnp::util::BAMPileupUtil calls both QSnpGATKRecord and QSnpRecord, but this class is not used by qSnp and other projects
4. qnp::TorrentPipeline is an old method too, even it calls neither QSnpGATKRecord nor QSnpRecord.

Describe the solution you'd like
QSnpGATKRecord and QSnpRecord should be deleted only we decide to remove qsnp::PileupPipeline, qsnp::MuTectPipeline, qnp::TorrentPipeline, qsnp::util::BAMPileupUtil and qsnp::util::QJumperWorker

Additional context
leave for open discussion

[ChristinaXu2017]

After a discussion, there qsnp::PileupPipeline, qsnp::MuTectPipeline and qnp::TorrentPipeline are old, they should be deprecated now and delete in future.