Drop openjdk12 on Travis CI
Fixes
@@ -6,8 +6,6 @@ matrix:
jdk: openjdk-ea
- env: TARGET_AP_SERVER=tomcat90
jdk: openjdk13
- - env: TARGET_AP_SERVER=tomcat90
- jdk: openjdk12
- env: TARGET_AP_SERVER=tomcat90
jdk: openjdk11
- env:
