remove Node 4 test

idleberg · idleberg · commit 2bd4d69af5be · 2016-10-05T11:12:39.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,6 @@
 sudo: false
 language: node_js
 node_js:
-  - "4"
   - "6"
 env:
   - CXX=g++-4.8
