remove node@4 from travis.yml

Jon Gold · Jon Gold · commit 4590ec937578 · 2016-11-29T16:57:26.000-08:00
diff --git a/.travis.yml b/.travis.yml
@@ -7,7 +7,6 @@ notifications:
 node_js:
   - '7'
   - '6'
-  - '4'
 before_script:
   - npm prune
 script:
