.travis.yml in kitchen-docker-2.7.0 vs .travis.yml in kitchen-docker-2.8.0

@@ -8,14 +8,9 @@
 - "2.5.1"
 
 services:
 - docker
 
-cache:
-  bundler: true
-  directories:
-  - /var/lib/docker
-
 script:
 - bundle exec docker version
 - bundle exec kitchen --version
 - bundle exec rake spec
 - bundle exec kitchen test -d always