ci: delete distribution version at travis.yml (#3784)

yoshinorin · SukkaW · commit 9ba38e9500ad · 2019-10-21T20:36:02.000+08:00
diff --git a/.travis.yml b/.travis.yml
@@ -19,5 +19,3 @@ script:
 after_script:
   - npm install coveralls
   - nyc report --reporter=text-lcov | coveralls
-
-dist: trusty
