Remove go 1.1.x
Remove go 1.1.x

as it hasn't been updated since August 2013.

cloudfoundry/go-buildpack,venicegeo/go-pdal-buildpack,half-ogre/go-buildpack,loafoe/go-buildpack,hpcloud/go-buildpack,hpcloud/go-buildpack,venicegeo/go-pdal-buildpack,half-ogre/go-buildpack,Jonty/go-buildpack,Jonty/go-buildpack,loafoe/go-buildpack,half-ogre/go-buildpack,cloudfoundry/go-buildpack,cloudfoundry/go-buildpack,Jonty/go-buildpack,loafoe/go-buildpack,venicegeo/go-pdal-buildpack,hpcloud/go-buildpack