Withdrawn: CODETOOLS-7903112: jcstress: GHA: Allow one concurrent run per PR only

[Aleksey Shipilev]

On Wed, 23 Feb 2022 08:58:30 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Similar to [JDK-8282225](https://bugs.openjdk.java.net/browse/JDK-8282225), we want the same for jcstress.

This pull request has been closed without being integrated.

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PR: https://git.openjdk.java.net/jcstress/pull/113