RFR: 8078340: Remove the unused PSParallelCompact::KeepAliveClosure

[Erik Helin]

On 2015-04-22, Stefan Karlsson wrote:
> Hi,
> 
> Please review this small change to remove the unused
> PSParallelCompact::KeepAliveClosure class.
> 
> http://cr.openjdk.java.net/~stefank/8078340/webrev.01/

Looks good, Reviewed.

Thanks,
Erik

> https://bugs.openjdk.java.net/browse/JDK-8078340
> 
> Thanks,
> StefanK