Remove ruby-dev from travis config.

brammool · brammool · commit bb543088a551 · 2017-07-28T12:45:40.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -74,7 +74,6 @@ addons:
       - python3-dev
       - liblua5.2-dev
       - lua5.2
-      - ruby-dev
       - cscope
 
 before_install:
