Drop duplicate node v11 for travis.

paulmillr · paulmillr · commit 80eae1f3974c · 2019-04-01T04:26:19.000+03:00
diff --git a/.travis.yml b/.travis.yml
@@ -6,6 +6,5 @@ os:
 language: node_js
 node_js:
   - node
-  - '11'
   - '10'
   - '8'
