Remove rbx testing

Trung Lê · Trung Lê · commit 5c924d4e2c50 · 2020-04-15T01:24:16.000+10:00
Travis CI no longer offer up-to-date rbx, plus the project has not gained enough community attention
diff --git a/.travis.yml b/.travis.yml
@@ -5,14 +5,11 @@ rvm:
   - 2.7
   - 2.6
   - 2.5
-  - rbx
 matrix:
   include:
     - rvm: 2.6
       os: osx
       osx_image: xcode9.4.1
-  allow_failures:
-    - rvm: rbx
   fast_finish: true
 addons:
   apt:
