RFR: JDK-8296968: Update langtools tests to use @enablePreview [v3]

Wed Nov 16 22:57:30 UTC 2022

On Tue, 15 Nov 2022 23:17:14 GMT, Joe Darcy <darcy at openjdk.org> wrote:

>> Update langtools tests to use JTreg's @enablePreview tag, where appropriate.
>
> Joe Darcy has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Implement review feedback.

Nice cleanup

-------------

Marked as reviewed by jjg (Reviewer).

PR: https://git.openjdk.org/jdk/pull/11149