RFR: 8254965: Remove unused Matcher::_ruleName and make ruleName non-product

Sun Oct 18 19:03:10 UTC 2020

On Sun, 18 Oct 2020 09:22:45 GMT, Claes Redestad <redestad at openjdk.org> wrote:

> - Matcher::_ruleName is unused - remove
> - ruleName, defined via ad, is only used by a non-product routine. #ifdef it accordingly
> 
> This reduces the JVM size (-63Kb on linux-x64, or about 0.25%)

Looks good.

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Marked as reviewed by neliasso (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/722