Revert "Add message for custom JDK"
Revert "Add message for custom JDK"

This reverts commit bc79dad79e597a9aca4b25b90f50279c7d9bbe62.

Scalingo/jvm-common-buildpack,heroku/heroku-buildpack-jvm-common,Scalingo/jvm-common-buildpack,heroku/heroku-buildpack-jvm-common