remove check for docker and mac osx compat
remove check for docker and mac osx compat

hpcloud/heroku-buildpack-scala,shunjikonishi/heroku-buildpack-scala-compiled,shunjikonishi/heroku-buildpack-scala-compiled,Javilete/buildpack,yannickdeturck/heroku-buildpack-scala,phdezann/heroku-buildpack-scala,heroku/heroku-buildpack-scala,yannickdeturck/heroku-buildpack-scala,Javilete/buildpack,agideon/heroku-buildpack-scala,KimStebel/heroku-buildpack-scala,KimStebel/heroku-buildpack-scala,phdezann/heroku-buildpack-scala,Scalingo/scala-buildpack,agideon/heroku-buildpack-scala,Scalingo/scala-buildpack,heroku/heroku-buildpack-scala,hpcloud/heroku-buildpack-scala