RFR (sh/8): Revert obsolete shared-code changes in runtime synchronizer code

[Zhengyu Gu]

Okay

Thanks.

-Zhengyu

On 11/12/19 3:50 PM, Roman Kennke wrote:
> This reverts shared-code changes in synchronizer.cpp and
> biasedLocking.cpp in shenandoah/jdk8. Those are no longer needed because
> of LRB. Functionally it should be equivalent, but better to keep the
> upstream versions and trim down the Shenandoah diff.
> 
> Webrev:
> http://cr.openjdk.java.net/~rkennke/shjdk8-remove-cruft2/webrev.00/
> 
> Testing: hotspot_gc_shenandoah
> 
> Can I please get a review?
> 
> Thanks,
> Roman
>