.travis.yml in gitsu-2.0.1 vs .travis.yml in gitsu-2.0.3

@@ -18,9 +18,5 @@
 rvm:
   - "1.8.7"
   - "1.9.2"
   - "1.9.3"
   - "2.0.0"
-  - jruby-18mode
-  - jruby-19mode
-  - rbx-18mode
-  - rbx-19mode