Travis: use default image for osx (#871)

Fix https://travis-ci.org/junegunn/vim-plug/jobs/573145961#L211-L217
2019-08-17 16:51:07 -04:00 · 2019-08-17 16:51:07 -04:00 · ebd534c88b
commit ebd534c88b
parent 3b29e1e6e2
1 changed files with 2 additions and 2 deletions
--- a/.travis.yml
+++ b/.travis.yml
@ -25,9 +25,9 @@ matrix:
    - env: ENV=vim74-xenial-ruby
      dist: xenial
      addons: {apt: {packages: [vim-nox]}}
-    - env: ENV=osx-10.14
+    - env: ENV=osx-highsierra
      os: osx
-      osx_image: xcode10.2
+      osx_image: xcode9.4
 install: |
  git config --global user.email "you@example.com"
  git config --global user.name "Your Name"