remove Zeta1Grouper header, not used in NUPIC2
remove Zeta1Grouper header, not used in NUPIC2

SaganBolliger/nupic,BeiLuoShiMen/nupic,scottpurdy/nupic,loretoparisi/nupic,numenta-ci/nupic,brev/nupic,glorizen/nupic,passiweinberger/nupic,markneville/nupic,cogmission/nupic,eranchetz/nupic,subutai/nupic,EricSB/nupic,blueburningcoder/nupic,jcasner/nupic,metaml/nupic,rhyolight/nupic,blueburningcoder/nupic,markneville/nupic,lscheinkman/nupic,ywcui1990/nupic,alfonsokim/nupic,vitaly-krugl/nupic,badlogicmanpreet/nupic,allanino/nupic,ywcui1990/nupic,numenta/nupic,glorizen/nupic,EricSB/nupic,markneville/nupic,GeraldLoeffler/nupic,pap/nupic,chen0031/nupic,scottpurdy/nupic,marionleborgne/nupic,sambitgaan/nupic,rcrowder/nupic,pulinagrawal/nupic,chanceraine/nupic,fergalbyrne/nupic,subutai/nupic,runt18/nupic,elkingtonmcb/nupic,elkingtonmcb/nupic,BeiLuoShiMen/nupic,akhilaananthram/nupic,ben-hopps/nupic,jcasner/nupic,sambitgaan/nupic,arhik/nupic,EricSB/nupic,cogmission/nupic,badlogicmanpreet/nupic,numenta-ci/nupic,virneo/nupic,loretoparisi/nupic,blueburningcoder/nupic,rcrowder/nupic,chanceraine/nupic,mcanthony/nupic,rayNymous/nupic,runt18/nupic,wanghaven/nupic,darshanthaker/nupic,virneo/nupic,badlogicmanpreet/nupic,alfonsokim/nupic,passiweinberger/nupic,neuroidss/nupic,chen0031/nupic,numenta-ci/nupic,chanceraine/nupic,breznak/nupic,eranchetz/nupic,ben-hopps/nupic,akhilaananthram/nupic,rayNymous/nupic,passiweinberger/nupic,chen0031/nupic,brev/nupic,elkingtonmcb/nupic,allanino/nupic,metaml/nupic,mcanthony/nupic,scottpurdy/nupic,subutai/nupic,BeiLuoShiMen/nupic,rayNymous/nupic,GeraldLoeffler/nupic,fergalbyrne/nupic,pulinagrawal/nupic,numenta/nupic,metaml/nupic,breznak/nupic,pap/nupic,BoltzmannBrain/nupic,virneo/nupic,loretoparisi/nupic,fergalbyrne/nupic,lscheinkman/nupic,go-bears/nupic,jcasner/nupic,go-bears/nupic,SaganBolliger/nupic,SaganBolliger/nupic,ben-hopps/nupic,breznak/nupic,ywcui1990/nupic,eranchetz/nupic,lscheinkman/nupic,runt18/nupic,wanghaven/nupic,brev/nupic,vamsirajendra/nupic,rcrowder/nupic,BoltzmannBrain/nupic,cngo-github/nupic,arhik/nupic,rhyolight/nupic,arhik/nupic,glorizen/nupic,marionleborgne/nupic,alfonsokim/nupic,neuroidss/nupic,darshanthaker/nupic,BoltzmannBrain/nupic,pap/nupic,wanghaven/nupic,neuroidss/nupic,numenta/nupic,akhilaananthram/nupic,mcanthony/nupic,rhyolight/nupic,pulinagrawal/nupic,cogmission/nupic,go-bears/nupic,GeraldLoeffler/nupic,vamsirajendra/nupic,cngo-github/nupic,allanino/nupic,darshanthaker/nupic,cngo-github/nupic,vitaly-krugl/nupic,marionleborgne/nupic,vitaly-krugl/nupic,vamsirajendra/nupic,sambitgaan/nupic