Stop testing on 2.7.0

2.7.0 was end-of-lifed. We don't need to have tests fail on it anymore.

Author: Colleen Murphy

.travis.yml

@@ -5,10 +5,6 @@ script: "bundle exec rake validate && bundle exec rake lint && bundle exec rake
 matrix:
   fast_finish: true
   include:
-  - rvm: 1.8.7
-    env: PUPPET_GEM_VERSION="~> 2.7.0" FACTER_GEM_VERSION="~> 1.6.0"
-  - rvm: 1.8.7
-    env: PUPPET_GEM_VERSION="~> 2.7.0" FACTER_GEM_VERSION="~> 1.7.0"
   - rvm: 1.9.3
     env: PUPPET_GEM_VERSION="~> 3.0"
   - rvm: 2.0.0