Update .travis.yml

ctkqiang · web-flow · commit a0c541235671 · 2020-09-15T14:40:10.000+08:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,6 @@
 language: java
 
 jdk:
-  - oraclejdk9
   - openjdk8
 
 sudo: true
