travis: Remove Node version 9 suite.

synicalsyntax · synicalsyntax · commit e23ff5cacabe · 2019-06-14T22:17:01.000+08:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,6 @@
 language: node_js
 node_js:
 - '10'
-- '9'
 - '8'
 before_script:
   ln -s $TRAVIS_BUILD_DIR/config/config-example.js $TRAVIS_BUILD_DIR/config/config.js
