remove RecoMET/Configuration/python/RecoHTMET_cff.py
remove RecoMET/METProducers/python/HTMET_cfi.py
stop testing htMet
remove RecoMET/METProducers/test/recoMET_htMet_cfg.py
Merge pull request #4007 from TaiSakuma/metdev-72X-140525_03

Remove unused files in RecoMET.