Remove pre-script bundle install from .travis.yml

EdgeJ · EdgeJ · commit ffe219b8b8b6 · 2018-08-15T09:44:13.000-04:00
Fixes issues with Rubocop checks failing in CI.
diff --git a/.travis.yml b/.travis.yml
@@ -3,7 +3,6 @@
 language: ruby
 install: true
 script: "script/cibuild"
-before_install: gem install bundler
 
 matrix:
   include:
