ci: use default macOS

whtsky · web-flow · commit bd53d3905ea5 · 2019-11-02T12:12:24.000+08:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,5 @@
 os: osx
 language: generic
-osx_image: xcode6.4
 env:
   global:
     - secure: "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"
