revert: fix(resume): Enable puppeteer to run on the Travis boxes.

Just follow the advice [here](https://github.com/GoogleChrome/puppeteer/blob/master/docs/troubleshooting.md#running-puppeteer-on-travis-ci) and pass an environment variable through to `resume-cli` per randytarampi/resume-cli#bcae057aa7864e688c14902d980fb1ae14cca9eb.

This reverts commit eea60ff.

.travis.yml

@@ -1,7 +1,5 @@
 language: node_js
 dist: trusty
-addons:
-  chrome: stable
 node_js:
 - '10'
 - '8'
@@ -27,7 +25,6 @@ before_install:
 - uname -a
 - lscpu
 - npm install -g npm
-- google-chrome-stable --headless --disable-gpu --remote-debugging-port=9222 http://localhost &
 before_script:
 - npx lerna run pretest
 script: