Withdrawn: 8274425: Remove unused Modules.extraLimitMods

[duke]

On Wed, 22 Sep 2021 07:09:29 GMT, Andrey Turbanov <duke at openjdk.java.net> wrote:

> HashSet `com.sun.tools.javac.comp.Modules.extraLimitMods` is always empty. Code only check its content, but no content added.
> There was a method `addExtraLimitModules`, but it was removed under [JDK-8175191](https://bugs.openjdk.java.net/browse/JDK-8175191) 253fdcd0b26
> Method `addExtraLimitModules` itself was added in ec9ca2997f4, but was never actually used .

This pull request has been closed without being integrated.

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PR: https://git.openjdk.java.net/jdk/pull/5628