chore(ci): stop testing node 9 (ava not compatible?)

skyrpex · skyrpex · commit 658a50451964 · 2019-09-13T11:20:28.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -2,7 +2,6 @@ language: node_js
 sudo: false
 node_js:
   - "8"
-  - "9"
   - "10"
 cache:
   directories:
