Stop testing minor versions of Puppet 4

Author: ghoneycutt

.travis.yml

@@ -18,14 +18,6 @@ script: 'SPEC_OPTS="--format documentation" bundle exec rake test'
 matrix:
   fast_finish: true
   include:
-  - rvm: 2.1.9
-    env: RUBYGEMS_VERSION=2.0.17 BUNDLER_VERSION=1.17.3 PUPPET_GEM_VERSION="~> 4.7.0"
-  - rvm: 2.1.9
-    env: RUBYGEMS_VERSION=2.0.17 BUNDLER_VERSION=1.17.3 PUPPET_GEM_VERSION="~> 4.8.0"
-  - rvm: 2.1.9
-    env: RUBYGEMS_VERSION=2.0.17 BUNDLER_VERSION=1.17.3 PUPPET_GEM_VERSION="~> 4.9.0"
-  - rvm: 2.1.9
-    env: RUBYGEMS_VERSION=2.0.17 BUNDLER_VERSION=1.17.3 PUPPET_GEM_VERSION="~> 4.10.0"
   - rvm: 2.1.9
     env: RUBYGEMS_VERSION=2.0.17 BUNDLER_VERSION=1.17.3 PUPPET_GEM_VERSION="~> 4"
   - rvm: 2.4.1