Remove open_files_limit property
Remove open_files_limit property

- ulimit release worked

Co-authored-by: Zander Mackie <320db42c0fea4ffbf0ae28d5036748df300aa745@pivotal.io>

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