RFR (M): 8235907: Fix tests referencing UseParallelOldGC

[Leo Korinth]

This change looks good to me.

Thanks,
Leo

On 13/12/2019 20:46, Thomas Schatzl wrote:
> Hi all,
> 
>       can I have reviews for this small change that removes uses of the
> flag UseParallelOldGC from testing? With jdk15 this flag has been
> obsoleted, so all tests using it error out.
> 
> There are follow-up RFEs to remove and eventually clean out parallel gc
> serial old code, but this at least makes the failures go away.
> 
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8235907
> Webrev:
> http://cr.openjdk.java.net/~tschatzl/8235907/webrev/
> Testing:
> hs-tier1-5 (still running, almost complete)
> 
> Thanks,
>     Thomas
>