Remove special case for cb1a27 since it is now on master
Remove special case for cb1a27 since it is now on master

Signed-off-by: Nikita Rathi <c9767bf2fec5c766a4bbec0247a4fe5653c411cf@pivotal.io>

cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci