Removed jdk settings for travis and attempting to override java opts
Removed jdk settings for travis and attempting to override java opts

Scalingo/java-buildpack,Scalingo/java-buildpack,franciscocpg/heroku-buildpack-java,Parlio/heroku-buildpack-java,wishtack/heroku-buildpack-java,noncreativetype/sms,noncreativetype/sms,kimonocloud/natsu-buildpack-java,wishtack/heroku-buildpack-java,neilgandhi/heroku-buildpack-java,heroku/heroku-buildpack-java,neilgandhi/heroku-buildpack-java,bluebreezecf/heroku-buildpack-java,heroku/heroku-buildpack-java,JIoJIaJIu/heroku-buildpack-java,bluebreezecf/heroku-buildpack-java,hpcloud/heroku-buildpack-java,franciscocpg/heroku-buildpack-java,noncreativetype/sms,kimonocloud/natsu-buildpack-java,hpcloud/heroku-buildpack-java,JIoJIaJIu/heroku-buildpack-java,Parlio/heroku-buildpack-java