Merge pull request #1557 from chef/lcg/remove-expire-cache

remove expire cache

Author: lamont-granquist

.expeditor/config.yml

@@ -22,9 +22,6 @@ github:
   # The file where our CHANGELOG is kept. This file is updated automatically with
   # details from the Pull Request via the `built_in:update_changelog` merge_action.
   changelog_file: "CHANGELOG.md"
-  # This will trigger an Omnibus build with EXPIRE_CACHE enabled after
-  # a pull request is merged into the release branch.
-  enable_expire_cache: true
   # The tag format to use (e.g. v1.0.0)
   version_tag_format: "v{{version}}"
   # The Github Team primarily responsible for handling incoming Pull Requests.