Travis CI: Actually don't install `npm@5` at all.

diff --git a/.travis.yml b/.travis.yml
index 85ad14526e3ae7fa0fd08430bf1a9689ee2dc316..19c1aa903caf0c4472dc6c63810fbdd7a9383e76 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,8 +8,6 @@ git:
 node_js:
   - "6"
   - "8"
-before_install:
-  - if [[ $(npm -v | cut -d. -f1) -lt "5" ]]; then npm install -g npm@5; fi
 install:
   - bundle install --deployment --jobs=3 --retry=3
   - npm install