.travis.yml in fluent-plugin-webhdfs-0.5.3 vs .travis.yml in fluent-plugin-webhdfs-0.6.0rc1

@@ -1,13 +1,12 @@
 sudo: false
 language: ruby
 
 rvm:
-  - 2.0.0
   - 2.1
   - 2.2
-  - 2.3.0
+  - 2.3.1
 
 branches:
   only:
     - master
 
@@ -21,14 +20,6 @@
 
 script: bundle exec rake test
 
 gemfile:
   - Gemfile
-  - gemfiles/fluentd_v0.12.gemfile
   - gemfiles/fluentd_v0.14.gemfile
-
-matrix:
-  exclude:
-    - rvm: 2.0.0
-      gemfile: Gemfile
-    - rvm: 2.0.0
-      gemfile: gemfiles/fluentd_v0.14.gemfile