.travis.yml in shallow_attributes-0.9.2 vs .travis.yml in shallow_attributes-0.9.3

@@ -1,11 +1,9 @@
 language: ruby
 sudo: false
 cache: bundler
 before_install: gem install bundler -v 1.11.2
 rvm:
-  - 2.0.0
-  - 2.1.9
   - 2.2.5
   - 2.3.1
   - 2.4.0
   - jruby-head
   - rbx-2