.travis.yml in howitzer-1.1.1 vs .travis.yml in howitzer-2.0.0

@@ -1,9 +1,6 @@
 language: ruby
 before_install:
   - gem install bundler
-rvm:
-  - 1.9.3
-  - 2.0.0
-  - 2.1.10
+rvm:  
   - 2.2.5
   - 2.3.1