Remove code which is not used during HiForest Production

The organization of the HiForest production code meant that a lot of analysis tools were included in the same folders. The switch to git motivates separating production code from analysis code, and here I attempt to remove all code that is not involved in production.
add back RhoGetter.h, needed by HiJetMatchAnalyzer
add edwenger back, needed for mc
remove old-style BuildFiles
actually delete old buildfiles