Merge pull request #3883 from edx/estute/use-default-java-versions-from-oracle-play

remove overrides for java versions on jenkins workers

playbooks/roles/jenkins_worker/meta/main.yml

@@ -4,10 +4,6 @@ dependencies:
   - jscover
   - newrelic
   - role: oraclejdk
-    oraclejdk_version: "8u60"
-    oraclejdk_base: "jdk1.8.0_60"
-    oraclejdk_build: "b27"
-    oraclejdk_link: "/usr/lib/jvm/java-8-oracle"
 
   # dependencies for edx-app jenkins worker:
   - role: edxapp_common