.travis.yml: remove oraclejdk7 (no longer available)
.travis.yml: remove oraclejdk7 (no longer available)

git-svn-id: 4652571f3dffef9654f8145d6bccf468f90ae391@1804605 13f79535-47bb-0310-9956-ffa450edef68

apache/commons-jexl,apache/commons-jexl,apache/commons-jexl