cleanup of btag configuration files
modified the MVA computer so it ignores extra TaggingVariables provided by the jet tag computer
removed v2 of the CSV computer now that the MVA computer can ignore extra TaggingVariables
removed leftover include of a removed header file
Merge pull request #6283 from cms-btv-pog/BTagCodeCleanup_from-CMSSW_7_3_X_2014-11-06-0200

btag code cleanup