RFR: 8329948: Remove string template feature [v5]

[Andrey Kuleshov]

On Thu, 11 Apr 2024 10:15:54 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

>> This PR removes support for the string template feature from the Java compiler and the Java SE API, as discussed here:
>> 
>> https://mail.openjdk.org/pipermail/amber-spec-experts/2024-April/004106.html
>
> Maurizio Cimadamore has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Drop spurious jshell test change

Marked as reviewed by akuleshov7 at github.com (no known OpenJDK username).

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PR Review: https://git.openjdk.org/jdk/pull/18688#pullrequestreview-2002188648