Ruby is no longer necessary

Author: jakezatecky

.travis.yml

@@ -3,10 +3,5 @@ node_js:
   - '10'
   - '12'
   - '13'
-before_script:
-  # Remove ./node_modules/.bin from PATH so node-which doesn't replace Unix which and cause RVM to barf. See https://github.com/travis-ci/travis-ci/issues/5092
-  - PATH=${PATH//:\.\/node_modules\/\.bin/}
-  - rvm install ruby --latest
-  - gem install sass scss_lint
 script:
   - npm run build