Update .travis.yml

JoeHegarty · web-flow · commit d8790bd9517e · 2019-05-28T10:59:41.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -2,6 +2,5 @@ language: java
 sudo: false
 jdk:
   - openjdk8
-  - openjdk9
-  - openjdk10
   - openjdk11
+  - openjdk12
