ci: drop old node support

Scrum · Scrum · commit cf95d62cba44 · 2019-11-08T10:42:11.000+03:00
diff --git a/.travis.yml b/.travis.yml
@@ -4,7 +4,6 @@ node_js:
   - "stable"
   - "lts/*"
   - 6
-  - 4
 
 env:
   global:

-Original file line number
+Diff line change
   - "stable"
   - "lts/*"
   - 6
 -  - 4
 env:
   global: