re-remove vulcan tasks that got added back in by #194
re-remove vulcan tasks that got added back in by #194

rvizza/heroku-buildpack-gsl-ruby,zunda/heroku-buildpack-ruby,orlando/heroku-buildpack-ruby,DigitalInnovation/heroku-buildpack-mslabs,ascot21/heroku-buildpack-turbo-sprockets,gls1/heroku-buildpack-ruby-pdftk-new,mrhenry/heroku-buildpack-ruby,Altoros/ruby-buildpack,cloudfoundry/ruby-buildpack,ablease/custom-buildpack,sky-uk/ruby-buildpack,takii/db2rubybuildpack,packetmonkey/heroku-buildpack-ruby,sky-uk/ruby-buildpack,redhotvengeance/heroku-buildpack-deep-thought,mattmanning/heroku-buildpack-ruby-jekyll,takii/heroku-buildpack-ruby,guidance-guarantee-programme/heroku-buildpack-princexml-old,CPPWind/ruby-buildpack,sky-uk/ruby-buildpack,sky-uk/help-heroku-buildpack,musicglue/heroku-buildpack-ruby,moneyadviceservice/heroku-buildpack-ruby-bowndler,sstelfox/buildpack-ruby,jasonlevens/heroku-buildpack-ruby,schu/heroku-buildpack-ruby,tdenovan/heroku-buildpack-ruby,fcruxen/ruby-buildpack,dlorson/gentle-buildpack,bskyb-commerce/ruby-buildpack,samfrench/heroku-buildpack-ruby,engineyard/heroku-buildpack-ruby,mperejda/heroku-buildpack-ruby,HYPERHYPER/heroku-buildpack-ruby,schu/heroku-buildpack-ruby,hixi/heroku-buildpack-ruby,ericroberts/heroku-buildpack-ruby,pilotcreative/heroku-buildpack-ruby,zoomer/heroku-buildpack-ruby-bower,cordata/heroku-buildpack-ruby,donnykurnia/heroku-buildpack-ruby,crdschurch/heroku-buildpack-ruby,takii/db2rubybuildpack,wakermahmud/heroku-buildpack-jekyll,0x00evil/heroku-buildpack-ruby,donnykurnia/heroku-buildpack-ruby,fcruxen/ruby-buildpack,reesio/heroku-buildpack-ruby,mintybit/heroku-buildpack-ruby,amaltson/heroku-buildpack-ruby,hpcloud/ruby-buildpack,heroku/heroku-buildpack-ruby,0x00evil/heroku-buildpack-ruby,erintherad/heroku-buildpack-ruby,trumaker/heroku-buildpack-turbo-sprockets,rvizza/heroku-buildpack-gsl-ruby,KoanHealth/heroku-buildpack-marvin-setup,ilpoldo/heroku-buildpack-ruby,ChefSteps/heroku-buildpack-ruby,cmaggard/heroku-buildpack-turbo-sprockets,ablease/custom-buildpack,trumaker/heroku-buildpack-turbo-sprockets,blueapron/heroku-buildpack-ruby,jayshreeanand/heroku-buildpack-ruby,tpope/heroku-buildpack-ruby-tpope,brightbytes/heroku-buildpack-ruby-without-assets-precompile,bwaite-jaroop/heroku-buildpack-ruby,Altoros/ruby-buildpack,ekaranto/rails4-bluemix-buildpack,jayshreeanand/heroku-buildpack-ruby,rowanoulton/heroku-buildpack-ruby,rowanoulton/heroku-buildpack-ruby,allomov/fat-free-heroku-buildpack-ruby,barakav/heroku-buildpack-ruby,aarongray/heroku-buildpack-ruby,gbenedict/heroku-buildpack-ruby,KoanHealth/heroku-buildpack-marvin-setup,recursecenter/heroku-buildpack-ruby,makifund/heroku-buildpack-ruby,daltonrenaldo/heroku-buildpack-ruby,tomwolfe/heroku-buildpack-gsl-ruby,swipesense/heroku-buildpack-ruby,hpcloud/ruby-buildpack,cmaggard/heroku-buildpack-turbo-sprockets,instacart/heroku-buildpack-ruby,simonnordberg/heroku-buildpack-ruby,packetmonkey/heroku-buildpack-ruby,zunda/heroku-buildpack-ruby,pilotcreative/heroku-buildpack-ruby,Nedomas/heroku-buildpack-ruby-minus-node-with-node-paths,schu/buildpack-testing,Jonty/ruby-buildpack,cloudfoundry/ruby-buildpack,mperejda/heroku-buildpack-ruby,righi/instacart-heroku-buildpack,mattwalters/heroku-buildpack-ruby,cloudn/buildpack-ruby,Scalingo/ruby-buildpack,vhx/heroku-buildpack,recursecenter/heroku-buildpack-ruby,cloudControl/buildpack-ruby,scottatron/moc-buildpack,orlando/heroku-buildpack-ruby,crdschurch/heroku-buildpack-ruby,derrek/heroku-buildpack-ruby,ndbroadbent/heroku-buildpack-turbo-sprockets,jasonlevens/heroku-buildpack-ruby,space150/heroku-buildpack-ruby,hatofmonkeys/ruby-testing-buildpack,jgable/buildpack-ruby-rack-setup-tasks,stefansundin/heroku-buildpack-ruby,jumptvs/BP_Ruby,aarongray/heroku-buildpack-ruby,mattwalters/heroku-buildpack-ruby,ascot21/heroku-buildpack-turbo-sprockets,tdenovan/heroku-buildpack-ruby,d-reinhold/cf-buildpack-ruby,Jonty/ruby-buildpack,awebneck/heroku-buildpack-canvas,hatofmonkeys/ruby-testing-buildpack,bskyb-commerce/ruby-buildpack,awebneck/heroku-buildpack-canvas,dtao/deft-buildpack-ruby,teodor-pripoae/heroku-buildpack-ruby,codykrieger/heroku-buildpack-jekyll,gls1/heroku-buildpack-ruby-pdftk,beydogan/ruby-buildpack,zidekmat/buildpack-ruby,ilpoldo/heroku-buildpack-ruby,ericboehs/heroku-buildpack-ruby,michaelphines/alexa-nest,codykrieger/heroku-buildpack-jekyll,cloudn/buildpack-ruby,ablease/custom-buildpack,DouglasAllen/heroku-buildpack-ruby,bwaite-jaroop/heroku-buildpack-ruby,hpcloud/ruby-buildpack,daltonrenaldo/heroku-buildpack-ruby,bellycard/heroku-buildpack-ruby,bskyb-commerce/ruby-buildpack,orenyk/heroku-buildpack-ruby,d-reinhold/cf-buildpack-ruby,dtao/teeny-buildpack,lyoshenka/heroku-buildpack-ruby-jekyll,redhotvengeance/heroku-buildpack-deep-thought,mattmanning/heroku-buildpack-ruby-jekyll,andycroll/heroku-buildpack-jekyll,takii/db2rubybuildpack,musicglue/heroku-buildpack-ruby,ibmdb/db2rubybuildpack,electricobjects/heroku-buildpack-ruby,Nedomas/heroku-buildpack-ruby-minus-node-with-node-paths,beydogan/ruby-buildpack,righi/instacart-heroku-buildpack,leonardykris/mos-ruby-buildpack,dtao/deft-buildpack-ruby,cordata/heroku-buildpack-ruby,sky-uk/ruby-buildpack,anay/buildpack-ruby-with-oracle-jdk,Jonty/ruby-buildpack,simonnordberg/heroku-buildpack-ruby,engineyard/heroku-buildpack-ruby,hellojustin/heroku-buildpack-custom-ruby,shuber/heroku-buildpack-ruby,allomov/fat-free-heroku-buildpack-ruby,DyegoCosta/heroku-buildpack-ruby,reesio/heroku-buildpack-ruby,markaschneider/heroku-buildpack-ruby-ffmpeg-sox,dtao/teeny-buildpack,bskyb-commerce/help-heroku-buildpack,cloudfoundry/ruby-buildpack,mintybit/heroku-buildpack-ruby,CPPWind/ruby-buildpack,diasks2/heroku-buildpack-mecab,jumptvs/BP_Ruby,Scalingo/ruby-buildpack,jumptvs/BP_Ruby,ndbroadbent/heroku-buildpack-turbo-sprockets,catalyzeio/buildpack-ruby,takii/db2rubybuildpack,fcruxen/ruby-buildpack,erintherad/heroku-buildpack-ruby,fgbreel/heroku-buildpack-ruby,dleavitt/heroku-buildpack-ruby,iamjarvo/ruby-buildpack,jonseaberg/heroku-buildpack-turbo-sprockets,qnyp/heroku-buildpack-ruby-bower,jonasoberschweiber/heroku-buildpack-ruby,gbenedict/heroku-buildpack-ruby,ChefSteps/heroku-buildpack-ruby,Micka33/heroku-buildpack-ruby-liblua,blueapron/heroku-buildpack-ruby,takii/heroku-buildpack-ruby,bellycard/heroku-buildpack-ruby,icelab/heroku-buildpack-ruby,dieze/heroku-buildpack-ruby-hooks,iamjarvo/ruby-buildpack,ltrademark/heroku-buildpack-ruby,dleavitt/heroku-buildpack-ruby,makifund/heroku-buildpack-ruby,DigitalInnovation/heroku-buildpack-mslabs,fgbreel/heroku-buildpack-ruby,scottatron/moc-buildpack,Altoros/ruby-buildpack,hellojustin/heroku-buildpack-custom-ruby,ibmdb/db2rubybuildpack,mrhenry/heroku-buildpack-ruby,moneyadviceservice/heroku-buildpack-ruby-bowndler,brightbytes/heroku-buildpack-ruby-without-assets-precompile,Genius/heroku-buildpack-ruby,hatofmonkeys/ruby-testing-buildpack,cloudn/buildpack-ruby,shuber/heroku-buildpack-ruby,cloudControl/buildpack-ruby,guidance-guarantee-programme/heroku-buildpack-princexml-old,tpope/heroku-buildpack-ruby-tpope,ablease/custom-buildpack,dlorson/gentle-buildpack,teodor-pripoae/heroku-buildpack-ruby,derrek/heroku-buildpack-ruby,leonardykris/mos-ruby-buildpack,jonasoberschweiber/heroku-buildpack-ruby,amaltson/heroku-buildpack-ruby,ericboehs/heroku-buildpack-ruby,gls1/heroku-buildpack-ruby-pdftk,sky-uk/help-heroku-buildpack,diasks2/heroku-buildpack-mecab,Git-Host/prelang-buildpack,gls1/heroku-buildpack-ruby-pdftk-new,qnyp/heroku-buildpack-ruby-bower,CPPWind/ruby-buildpack,icelab/heroku-buildpack-ruby,schu/buildpack-testing,jumptvs/BP_Ruby,Jonty/ruby-buildpack,sstelfox/buildpack-ruby,anay/buildpack-ruby-with-oracle-jdk,Dim25/heroku-buildpack-ruby-GSL,pietrop/heroku-buildpack-ruby,pkgr/heroku-buildpack-ruby,qstream/heroku-buildpack-ruby,lyoshenka/heroku-buildpack-ruby-jekyll,stefansundin/heroku-buildpack-ruby,tenjikinc/heroku-buildpack-ruby,stolt45/heroku-buildpack-ruby-with-sqlite3,pkgr/heroku-buildpack-ruby,DyegoCosta/heroku-buildpack-ruby,bskyb-commerce/ruby-buildpack,Git-Host/prelang-buildpack,bskyb-commerce/help-heroku-buildpack,samfrench/heroku-buildpack-ruby,michaelphines/alexa-nest,iamjarvo/ruby-buildpack,ekaranto/rails4-bluemix-buildpack,Altoros/ruby-buildpack,tenjikinc/heroku-buildpack-ruby,HYPERHYPER/heroku-buildpack-ruby,ibmdb/db2rubybuildpack,iamjarvo/ruby-buildpack,cloudn/buildpack-ruby,Genius/heroku-buildpack-ruby,DouglasAllen/heroku-buildpack-ruby,heroku/heroku-buildpack-ruby,stolt45/heroku-buildpack-ruby-with-sqlite3,dieze/heroku-buildpack-ruby-hooks,fcruxen/ruby-buildpack,barakav/heroku-buildpack-ruby,instacart/heroku-buildpack-ruby,hpcloud/ruby-buildpack,andycroll/heroku-buildpack-jekyll,ekaranto/rails4-bluemix-buildpack,ericroberts/heroku-buildpack-ruby,zidekmat/buildpack-ruby,tomwolfe/heroku-buildpack-gsl-ruby,pietrop/heroku-buildpack-ruby,zoomer/heroku-buildpack-ruby-bower,ekaranto/rails4-bluemix-buildpack,cloudfoundry/ruby-buildpack,ruby/heroku-buildpack-www-ruby-lang,ltrademark/heroku-buildpack-ruby,catalyzeio/buildpack-ruby,Dim25/heroku-buildpack-ruby-GSL,hixi/heroku-buildpack-ruby,jonseaberg/heroku-buildpack-turbo-sprockets,electricobjects/heroku-buildpack-ruby,markaschneider/heroku-buildpack-ruby-ffmpeg-sox,vhx/heroku-buildpack,qstream/heroku-buildpack-ruby,d-reinhold/cf-buildpack-ruby,CPPWind/ruby-buildpack,cloudfoundry/ruby-buildpack,Micka33/heroku-buildpack-ruby-liblua,jgable/buildpack-ruby-rack-setup-tasks,wakermahmud/heroku-buildpack-jekyll,swipesense/heroku-buildpack-ruby,space150/heroku-buildpack-ruby,orenyk/heroku-buildpack-ruby